Kernel: AML tries to initialize processors when entering ACPI mode

I had forgotten that Processors used to be a different definition
in AML.

I also implemented reads/writes for FieldElement/IndexFieldElement
that fit in 64 bits. Reads and writes to buffer are still a TODO.

kernel/CMakeLists.txt

@@ -12,6 +12,7 @@ set(KERNEL_SOURCES
 	font/prefs.psf.o
 	kernel/ACPI/ACPI.cpp
 	kernel/ACPI/AML.cpp
+	kernel/ACPI/AML/Device.cpp
 	kernel/ACPI/AML/Field.cpp
 	kernel/ACPI/AML/NamedObject.cpp
 	kernel/ACPI/AML/Namespace.cpp