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/Interrupts/SpuriousInterruptHandler.cpp

@@ -110,7 +110,7 @@ void SpuriousInterruptHandler::disable_interrupt_vector()
 StringView SpuriousInterruptHandler::controller() const
 {
     if (m_responsible_irq_controller->type() == IRQControllerType::i82093AA)
-        return "";
+        return ""sv;
     return m_responsible_irq_controller->model();
 }
 }