x86: adapt voyager's setup_trampoline

make setup_trampoline non-static. This way, it won't conflict
with the extern declaration in smp.h
Signed-off-by: NGlauber Costa <gcosta@redhat.com>
Signed-off-by: NIngo Molnar <mingo@elte.hu>

arch/x86/mach-voyager/voyager_smp.c

@@ -429,7 +429,7 @@ void __init smp_store_cpu_info(int id)
 }
 
 /* set up the trampoline and return the physical address of the code */
-static __u32 __init setup_trampoline(void)
+unsigned long __init setup_trampoline(void)
 {
 	/* these two are global symbols in trampoline.S */
 	extern const __u8 trampoline_end[];