Everywhere: Add sv suffix to strings relying on StringView(char const*)

Each of these strings would previously rely on StringView's char const*
constructor overload, which would call __builtin_strlen on the string.
Since we now have operator ""sv, we can replace these with much simpler
versions. This opens the door to being able to remove
StringView(char const*).

No functional changes.

Kernel/Storage/Ramdisk/Device.h

@@ -33,7 +33,7 @@ private:
     // ^StorageDevice
     virtual CommandSet command_set() const override { return CommandSet::PlainMemory; }
 
-    Mutex m_lock { "RamdiskDevice" };
+    Mutex m_lock { "RamdiskDevice"sv };
 
     NonnullOwnPtr<Memory::Region> m_region;
 };