[PATCH -tip] x86: mm/init.c declare check_efer() before it get used

[Jaswinder Singh Rajput <jaswinder@kernel.org>]

This sparse warning:

  arch/x86/mm/init.c:83:16: warning: symbol 'check_efer' was not declared. Should it be static?

triggers because check_efer() is not decalared before using it.
asm/proto.h includes the declaration of check_efer(),
so including asm/proto.h to fix that - this also address the sparse warning.

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
---
 arch/x86/mm/init.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/arch/x86/mm/init.c b/arch/x86/mm/init.c
index 47ce9a2..0607119 100644
--- a/arch/x86/mm/init.c
+++ b/arch/x86/mm/init.c
@@ -12,6 +12,7 @@
 #include <asm/system.h>
 #include <asm/tlbflush.h>
 #include <asm/tlb.h>
+#include <asm/proto.h>
 
 DEFINE_PER_CPU(struct mmu_gather, mmu_gathers);
 
-- 
1.6.0.6