Kernel: add NEVER_INLINE and make Interruptable not constructable

kernel/include/kernel/Attributes.h

@@ -1,3 +1,4 @@
 #pragma once
 
 #define ALWAYS_INLINE inline __attribute__((always_inline))
+#define NEVER_INLINE __attribute__((noinline))

kernel/include/kernel/InterruptController.h

@@ -11,14 +11,16 @@ namespace Kernel
 	class Interruptable
 	{
 	public:
-		Interruptable() = default;
-
 		void set_irq(int irq);
 		void enable_interrupt();
 		void disable_interrupt();
 
 		virtual void handle_irq() = 0;
 
+	protected:
+		Interruptable() = default;
+		~Interruptable() {}
+
 	private:
 		int m_irq { -1 };
 	};