x86: seperate funcs from setup_64 to cpu common_64.c

Signed-off-by: Yinghai Lu <yhlu.kernel@mail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/include/asm-x86/processor.h b/include/asm-x86/processor.h
index 4ab2ede..a5df34f 100644
--- a/include/asm-x86/processor.h
+++ b/include/asm-x86/processor.h
@@ -153,6 +153,7 @@
 
 extern void cpu_detect(struct cpuinfo_x86 *c);
 
+extern void early_cpu_init(void);
 extern void identify_cpu(struct cpuinfo_x86 *);
 extern void identify_boot_cpu(void);
 extern void identify_secondary_cpu(struct cpuinfo_x86 *);