Kernel: Use operator ""sv in all class_name() implementations

Previously there was a mix of returning plain strings and returning
explicit string views using `operator ""sv`. This change switches them
all to standardized on `operator ""sv` as it avoids a call to strlen.

Kernel/Devices/ConsoleDevice.h

@@ -26,7 +26,7 @@ public:
     virtual bool can_write(const Kernel::OpenFileDescription&, size_t) const override { return true; }
     virtual Kernel::KResultOr<size_t> read(OpenFileDescription&, u64, Kernel::UserOrKernelBuffer&, size_t) override;
     virtual Kernel::KResultOr<size_t> write(OpenFileDescription&, u64, const Kernel::UserOrKernelBuffer&, size_t) override;
-    virtual StringView class_name() const override { return "Console"; }
+    virtual StringView class_name() const override { return "Console"sv; }
 
     void put_char(char);
 

Kernel/Devices/FullDevice.h

@@ -26,7 +26,7 @@ private:
     virtual KResultOr<size_t> write(OpenFileDescription&, u64, const UserOrKernelBuffer&, size_t) override;
     virtual bool can_read(const OpenFileDescription&, size_t) const override;
     virtual bool can_write(const OpenFileDescription&, size_t) const override { return true; }
-    virtual StringView class_name() const override { return "FullDevice"; }
+    virtual StringView class_name() const override { return "FullDevice"sv; }
 };
 
 }

Kernel/Devices/HID/KeyboardDevice.h

@@ -49,7 +49,7 @@ protected:
     mutable Spinlock m_queue_lock;
     CircularQueue<Event, 16> m_queue;
     // ^CharacterDevice
-    virtual StringView class_name() const override { return "KeyboardDevice"; }
+    virtual StringView class_name() const override { return "KeyboardDevice"sv; }
 
     u8 m_modifiers { 0 };
     bool m_caps_lock_to_ctrl_pressed { false };

Kernel/Devices/HID/MouseDevice.h

@@ -34,7 +34,7 @@ public:
 protected:
     MouseDevice();
     // ^CharacterDevice
-    virtual StringView class_name() const override { return "MouseDevice"; }
+    virtual StringView class_name() const override { return "MouseDevice"sv; }
 
     mutable Spinlock m_queue_lock;
     CircularQueue<MousePacket, 100> m_queue;

Kernel/Devices/HID/PS2KeyboardDevice.h

@@ -44,7 +44,7 @@ private:
     virtual bool handle_irq(const RegisterState&) override;
 
     // ^CharacterDevice
-    virtual StringView class_name() const override { return "KeyboardDevice"; }
+    virtual StringView class_name() const override { return "KeyboardDevice"sv; }
 };
 
 }

Kernel/Devices/KCOVDevice.h

@@ -29,7 +29,7 @@ public:
 protected:
     KCOVDevice();
 
-    virtual StringView class_name() const override { return "KCOVDevice"; }
+    virtual StringView class_name() const override { return "KCOVDevice"sv; }
 
     virtual bool can_read(const OpenFileDescription&, size_t) const override final { return true; }
     virtual bool can_write(const OpenFileDescription&, size_t) const override final { return true; }

Kernel/Devices/MemoryDevice.h

@@ -26,7 +26,7 @@ public:
 private:
     MemoryDevice();
 
-    virtual StringView class_name() const override { return "MemoryDevice"; }
+    virtual StringView class_name() const override { return "MemoryDevice"sv; }
     virtual bool can_read(const OpenFileDescription&, size_t) const override { return true; }
     virtual bool can_write(const OpenFileDescription&, size_t) const override { return false; }
     virtual bool is_seekable() const override { return true; }

Kernel/Devices/NullDevice.h

@@ -26,7 +26,7 @@ private:
     virtual KResultOr<size_t> write(OpenFileDescription&, u64, const UserOrKernelBuffer&, size_t) override;
     virtual bool can_write(const OpenFileDescription&, size_t) const override { return true; }
     virtual bool can_read(const OpenFileDescription&, size_t) const override;
-    virtual StringView class_name() const override { return "NullDevice"; }
+    virtual StringView class_name() const override { return "NullDevice"sv; }
     virtual bool is_seekable() const override { return true; }
 };
 

Kernel/Devices/RandomDevice.h

@@ -26,7 +26,7 @@ private:
     virtual KResultOr<size_t> write(OpenFileDescription&, u64, const UserOrKernelBuffer&, size_t) override;
     virtual bool can_read(const OpenFileDescription&, size_t) const override;
     virtual bool can_write(const OpenFileDescription&, size_t) const override { return true; }
-    virtual StringView class_name() const override { return "RandomDevice"; }
+    virtual StringView class_name() const override { return "RandomDevice"sv; }
 };
 
 }

Kernel/Devices/SB16.h

@@ -42,7 +42,7 @@ private:
     virtual bool handle_irq(const RegisterState&) override;
 
     // ^CharacterDevice
-    virtual StringView class_name() const override { return "SB16"; }
+    virtual StringView class_name() const override { return "SB16"sv; }
 
     void initialize();
     void wait_for_irq();

Kernel/Devices/SerialDevice.h

@@ -110,7 +110,7 @@ private:
     friend class PCISerialDevice;
 
     // ^CharacterDevice
-    virtual StringView class_name() const override { return "SerialDevice"; }
+    virtual StringView class_name() const override { return "SerialDevice"sv; }
 
     void initialize();
     void set_interrupts(bool interrupt_enable);

Kernel/Devices/ZeroDevice.h

@@ -26,7 +26,7 @@ private:
     virtual KResultOr<size_t> write(OpenFileDescription&, u64, const UserOrKernelBuffer&, size_t) override;
     virtual bool can_read(const OpenFileDescription&, size_t) const override;
     virtual bool can_write(const OpenFileDescription&, size_t) const override { return true; }
-    virtual StringView class_name() const override { return "ZeroDevice"; }
+    virtual StringView class_name() const override { return "ZeroDevice"sv; }
 };
 
 }