[PATCH] unify pfn_to_page: v850 pfn_to_page

v850 can use generic funcs.
Signed-off-by: NKAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Miles Bader <uclinux-v850@lsi.nec.co.jp>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

include/asm-v850/page.h

@@ -111,8 +111,7 @@ typedef unsigned long pgprot_t;
 #define page_to_virt(page) \
   ((((page) - mem_map) << PAGE_SHIFT) + PAGE_OFFSET)
 
-#define pfn_to_page(pfn)	virt_to_page (pfn_to_virt (pfn))
-#define page_to_pfn(page)	virt_to_pfn (page_to_virt (page))
+#define ARCH_PFN_OFFSET		(PAGE_OFFSET >> PAGE_SHIFT)
 #define pfn_valid(pfn)	        ((pfn) < max_mapnr)
 
 #define	virt_addr_valid(kaddr)						\
@@ -125,6 +124,7 @@ typedef unsigned long pgprot_t;
 
 #endif /* KERNEL */
 
+#include <asm-generic/memory_model.h>
 #include <asm-generic/page.h>
 
 #endif /* __V850_PAGE_H__ */