x86_64: prepare shared kernel/acpi/Makefile

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

arch/x86_64/kernel/acpi/Makefile

-obj-y			:= boot.o
-boot-y			:= ../../../i386/kernel/acpi/boot.o
-obj-$(CONFIG_ACPI_SLEEP)	+= sleep_64.o wakeup_64.o
-
-ifneq ($(CONFIG_ACPI_PROCESSOR),)
-obj-y			+= processor.o
-processor-y		:= ../../../i386/kernel/acpi/processor.o ../../../i386/kernel/acpi/cstate.o
+ifeq ($(CONFIG_X86_32),y)
+include ${srctree}/arch/i386/kernel/acpi/Makefile_32
+else
+include ${srctree}/arch/x86_64/kernel/acpi/Makefile_64
 endif
-

arch/x86_64/kernel/acpi/Makefile_64

+obj-y			:= boot.o
+boot-y			:= ../../../i386/kernel/acpi/boot.o
+obj-$(CONFIG_ACPI_SLEEP)	+= sleep_64.o wakeup_64.o
+
+ifneq ($(CONFIG_ACPI_PROCESSOR),)
+obj-y			+= processor.o
+processor-y		:= ../../../i386/kernel/acpi/processor.o ../../../i386/kernel/acpi/cstate.o
+endif
+