f2fs: use generic posix ACL infrastructure

f2fs has some weird mode bit handling, so still using the old
chmod code for now.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

diff --cc fs/f2fs/acl.c
Simple merge

diff --cc fs/f2fs/acl.h
Simple merge

diff --cc fs/f2fs/f2fs.h
Simple merge

diff --cc fs/f2fs/file.c
Simple merge

diff --cc fs/f2fs/namei.c
Simple merge

diff --cc fs/f2fs/xattr.c
Simple merge

diff --cc fs/f2fs/xattr.h
Simple merge