x86: merge extern function definitions

move extern function definitions that are the same between smp_{32,64}.h
to smp.h

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

include/asm-x86/smp.h

@@ -8,5 +8,8 @@
 # include "smp_64.h"
 #endif
 
+extern void smp_alloc_memory(void);
+extern void lock_ipi_call_lock(void);
+extern void unlock_ipi_call_lock(void);
 #endif /* __ASSEMBLY__ */
 #endif

include/asm-x86/smp_32.h

@@ -22,10 +22,6 @@ extern cpumask_t cpu_callin_map;
 extern int smp_num_siblings;
 extern unsigned int num_processors;
 
-extern void smp_alloc_memory(void);
-extern void lock_ipi_call_lock(void);
-extern void unlock_ipi_call_lock(void);
-
 extern void (*mtrr_hook) (void);
 extern void zap_low_mappings (void);
 

include/asm-x86/smp_64.h

@@ -19,10 +19,6 @@ extern cpumask_t cpu_initialized;
 extern int smp_num_siblings;
 extern unsigned int num_processors;
 
-extern void smp_alloc_memory(void);
-extern void lock_ipi_call_lock(void);
-extern void unlock_ipi_call_lock(void);
-
 extern int smp_call_function_mask(cpumask_t mask, void (*func)(void *),
 				  void *info, int wait);