powerpc set_huge_psize() false positive

called only from __init, calls __init.  Incidentally, it ought to be static
in file.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

arch/powerpc/include/asm/mmu-hash64.h

@@ -280,7 +280,6 @@ extern int hash_huge_page(struct mm_struct *mm, unsigned long access,
 extern int htab_bolt_mapping(unsigned long vstart, unsigned long vend,
 			     unsigned long pstart, unsigned long prot,
 			     int psize, int ssize);
-extern void set_huge_psize(int psize);
 extern void add_gpage(unsigned long addr, unsigned long page_size,
 			  unsigned long number_of_pages);
 extern void demote_segment_4k(struct mm_struct *mm, unsigned long addr);

arch/powerpc/mm/hugetlbpage.c

@@ -677,7 +677,7 @@ int hash_huge_page(struct mm_struct *mm, unsigned long access,
 	return err;
 }
 
-void set_huge_psize(int psize)
+static void __init set_huge_psize(int psize)
 {
 	/* Check that it is a page size supported by the hardware and
 	 * that it fits within pagetable limits. */