Kernel: Rewrite the AML conversion API

This doesn't currently make the interpreter any better, but it will make
further implementation easier to be spec (or hardware...) compliant

kernel/include/kernel/ACPI/AML/PowerResource.h

@@ -9,7 +9,7 @@
 namespace Kernel::ACPI::AML
 {
 
-	struct PowerResource : public AML::Scope
+	struct PowerResource final : public AML::Scope
 	{
 		uint8_t system_level;
 		uint16_t resource_order;
@@ -20,6 +20,8 @@ namespace Kernel::ACPI::AML
 			, resource_order(resource_order)
 		{}
 
+		BAN::RefPtr<AML::Node> convert(uint8_t) override { return {}; }
+
 		static ParseResult parse(ParseContext& context)
 		{
 			ASSERT(context.aml_data.size() >= 2);