posix acls: Remove duplicate xattr name definitions

Remove POSIX_ACL_XATTR_{ACCESS,DEFAULT} and GFS2_POSIX_ACL_{ACCESS,DEFAULT}
and replace them with the definitions in <include/uapi/linux/xattr.h>.

Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Reviewed-by: James Morris <james.l.morris@oracle.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/gfs2/acl.c b/fs/gfs2/acl.c
index 1be3b06..7919326 100644
--- a/fs/gfs2/acl.c
+++ b/fs/gfs2/acl.c
@@ -31,9 +31,9 @@
 {
 	switch (type) {
 	case ACL_TYPE_ACCESS:
-		return GFS2_POSIX_ACL_ACCESS;
+		return XATTR_POSIX_ACL_ACCESS;
 	case ACL_TYPE_DEFAULT:
-		return GFS2_POSIX_ACL_DEFAULT;
+		return XATTR_POSIX_ACL_DEFAULT;
 	}
 	return NULL;
 }