x86: move tsc definitions to were they belong

This patch wipes out the definitions of tsc_disable from processor_32.h
and move it to tsc.h, were it belongs

Signed-off-by: Glauber de Oliveira Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
diff --git a/include/asm-x86/tsc.h b/include/asm-x86/tsc.h
index 9b7d264..4013037 100644
--- a/include/asm-x86/tsc.h
+++ b/include/asm-x86/tsc.h
@@ -16,6 +16,10 @@
 
 extern unsigned int cpu_khz;
 extern unsigned int tsc_khz;
+/* flag for disabling the tsc */
+extern int tsc_disable;
+
+extern void disable_TSC(void);
 
 static inline cycles_t get_cycles(void)
 {