x86: unify arch/x86/mm/Makefile

Unify arch/x86/mm/Makefile between 32 and 64 bits.

All configuration variables that are protected by Kconfig constraints
have been put in the common part of the Makefile; however, the NUMA
files are totally different between 32 and 64 bits and are handled via
an ifdef.
Signed-off-by: NH. Peter Anvin <hpa@zytor.com>
Signed-off-by: NIngo Molnar <mingo@elte.hu>
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

arch/x86/mm/Makefile

+obj-y	:=  init_$(BITS).o fault.o ioremap.o extable.o pageattr.o mmap.o
+
+obj-$(CONFIG_X86_32)		+= pgtable_32.o
+
+obj-$(CONFIG_HUGETLB_PAGE)	+= hugetlbpage.o
+
+obj-$(CONFIG_HIGHMEM)		+= highmem_32.o
+
 ifeq ($(CONFIG_X86_32),y)
-include ${srctree}/arch/x86/mm/Makefile_32
+obj-$(CONFIG_NUMA)		+= discontig_32.o
 else
-include ${srctree}/arch/x86/mm/Makefile_64
+obj-$(CONFIG_NUMA)		+= numa_64.o
+obj-$(CONFIG_K8_NUMA)		+= k8topology_64.o
+obj-$(CONFIG_ACPI_NUMA)		+= srat_64.o
 endif

arch/x86/mm/Makefile_32

-#
-# Makefile for the linux i386-specific parts of the memory manager.
-#
-
-obj-y	:= init_32.o pgtable_32.o fault.o ioremap.o extable.o pageattr.o mmap.o
-
-obj-$(CONFIG_NUMA) += discontig_32.o
-obj-$(CONFIG_HUGETLB_PAGE) += hugetlbpage.o
-obj-$(CONFIG_HIGHMEM) += highmem_32.o

arch/x86/mm/Makefile_64

-#
-# Makefile for the linux x86_64-specific parts of the memory manager.
-#
-
-obj-y	 := init_64.o fault.o ioremap.o extable.o pageattr.o mmap.o
-obj-$(CONFIG_HUGETLB_PAGE) += hugetlbpage.o
-obj-$(CONFIG_NUMA) += numa_64.o
-obj-$(CONFIG_K8_NUMA) += k8topology_64.o
-obj-$(CONFIG_ACPI_NUMA) += srat_64.o