ramfs_aops is identical in file-mmu.c and file-nommu.c.  Thus move it to
fs/ramfs/inode.c and make it static.
Signed-off-by: NAxel Lin <axel.lin@ingics.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>