x86: move tsc related declarations

tsc has also it's own header file. Nuke the stupid 64 bit ifdef
while at it.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/include/asm-x86/tsc.h b/include/asm-x86/tsc.h
index 6baab30..d7b1c4e 100644
--- a/include/asm-x86/tsc.h
+++ b/include/asm-x86/tsc.h
@@ -73,8 +73,7 @@
 extern void check_tsc_sync_source(int cpu);
 extern void check_tsc_sync_target(void);
 
-#ifdef CONFIG_X86_64
 extern void tsc_calibrate(void);
-#endif
+extern int notsc_setup(char *);
 
 #endif