[ARM] 4191/1: Remove redundant __flush_dcache_page() function prototype

Commit 1c9d3df5 added function prototype
__flush_dcache_page() in include/asm-arm/cacheflush.h.  So we can remove
the prototype for same in arch/arm/mm/fault-armv.c since it is now
redundant to have it there.
Signed-off-by: NGeorge G. Davis <gdavis@mvista.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

arch/arm/mm/fault-armv.c

@@ -119,8 +119,6 @@ make_coherent(struct address_space *mapping, struct vm_area_struct *vma, unsigne
 		flush_cache_page(vma, addr, pfn);
 }
 
-void __flush_dcache_page(struct address_space *mapping, struct page *page);
-
 /*
  * Take care of architecture specific things when placing a new PTE into
  * a page table, or changing an existing PTE.  Basically, there are two