x86: smp.h move prefill_possible_map declartion to cpu.h

Impact: cleanup, moving NON-SMP stuff from smp.h

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index ae0d804..f41c448 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -89,7 +89,7 @@
 
 #include <asm/system.h>
 #include <asm/vsyscall.h>
-#include <asm/smp.h>
+#include <asm/cpu.h>
 #include <asm/desc.h>
 #include <asm/dma.h>
 #include <asm/iommu.h>