x86, NUMA: rename srat_64.c to srat.c

Rename srat_64.c to srat.c. This is to prepare for unification of
NUMA init paths between 32 and 64bit.

Signed-off-by: Tejun Heo <[e-mail]>
Cc: Ingo Molnar <[e-mail]>
Cc: Yinghai Lu <[e-mail]>
Cc: David Rientjes <[e-mail]>
Cc: Thomas Gleixner <[e-mail]>
Cc: "H. Peter Anvin" <[e-mail]>

arch/x86/mm/Makefile

···
 
 obj-$(CONFIG_NUMA)		+= numa.o numa_$(BITS).o
 obj-$(CONFIG_AMD_NUMA)		+= amdtopology_64.o
-obj-$(CONFIG_ACPI_NUMA)		+= srat_$(BITS).o
+ifeq ($(CONFIG_ACPI_NUMA),y)
+obj-$(CONFIG_X86_64)		+= srat.o
+obj-$(CONFIG_X86_32)		+= srat_32.o
+endif
 obj-$(CONFIG_NUMA_EMU)		+= numa_emulation.o
 
 obj-$(CONFIG_HAVE_MEMBLOCK)		+= memblock.o