x86: Move the 64-bit Centaur specific parts out of setup_64.c

Create a separate centaur_64.c file in the cpu/ dir for
the useful parts to live in.

Signed-off-by: Dave Jones <davej@redhat.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
diff --git a/arch/x86/kernel/cpu/Makefile b/arch/x86/kernel/cpu/Makefile
index b7a1192..c77a1c5 100644
--- a/arch/x86/kernel/cpu/Makefile
+++ b/arch/x86/kernel/cpu/Makefile
@@ -10,6 +10,7 @@
 obj-$(CONFIG_X86_64)	+= amd_64.o
 obj-$(CONFIG_X86_32)	+= cyrix.o
 obj-$(CONFIG_X86_32)	+= centaur.o
+obj-$(CONFIG_X86_64)	+= centaur_64.o
 obj-$(CONFIG_X86_32)	+= transmeta.o
 obj-$(CONFIG_X86_32)	+= intel.o
 obj-$(CONFIG_X86_64)	+= intel_64.o