[PATCH] powerpc/mm: fix missing prototypes in slice.c

[Christophe Leroy]

This patch fixes the following warnings (obtained with make W=1).

arch/powerpc/mm/slice.c: At top level:
arch/powerpc/mm/slice.c:682:15: error: no previous prototype for 'arch_get_unmapped_area' [-Werror=missing-prototypes]
 unsigned long arch_get_unmapped_area(struct file *filp,
               ^
arch/powerpc/mm/slice.c:692:15: error: no previous prototype for 'arch_get_unmapped_area_topdown' [-Werror=missing-prototypes]
 unsigned long arch_get_unmapped_area_topdown(struct file *filp,
               ^

Signed-off-by: Christophe Leroy <christophe.leroy@xxxxxx>
---
 arch/powerpc/mm/slice.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/powerpc/mm/slice.c b/arch/powerpc/mm/slice.c
index 205fe557ca10..9530c6db406a 100644
--- a/arch/powerpc/mm/slice.c
+++ b/arch/powerpc/mm/slice.c
@@ -31,6 +31,7 @@
 #include <linux/spinlock.h>
 #include <linux/export.h>
 #include <linux/hugetlb.h>
+#include <linux/sched/mm.h>
 #include <asm/mman.h>
 #include <asm/mmu.h>
 #include <asm/copro.h>
-- 
2.13.3