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 <[e-mail]>
Signed-off-by: Ingo Molnar <[e-mail]>

include/asm-x86/proto.h

···
 extern unsigned long table_start, table_end;
 
 extern int exception_trace;
-extern unsigned cpu_khz;
-extern unsigned tsc_khz;
 
 extern int reboot_force;
-extern int notsc_setup(char *);
 
 extern int gsi_irq_sharing(int gsi);
 

include/asm-x86/tsc.h

···
 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