fs: rename "rename2" i_op to "rename"

Generated patch:

sed -i "s/\.rename2\t/\.rename\t\t/" `git grep -wl rename2`
sed -i "s/\brename2\b/rename/g" `git grep -wl rename2`

Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>

fs/exofs/namei.c

@@ -314,7 +314,7 @@ const struct inode_operations exofs_dir_inode_operations = {
 	.mkdir  	= exofs_mkdir,
 	.rmdir  	= exofs_rmdir,
 	.mknod  	= exofs_mknod,
-	.rename2	= exofs_rename,
+	.rename		= exofs_rename,
 	.setattr	= exofs_setattr,
 };