udf: Neaten udf_debug uses

Just whitespace and argument alignment.
Introduce some checkpatch warnings that deserve to be ignored.

Reviewed-by: NamJae Jeon <linkinjeon@gmail.com>
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Jan Kara <jack@suse.cz>
diff --git a/fs/udf/directory.c b/fs/udf/directory.c
index 4e08438..3e44f57 100644
--- a/fs/udf/directory.c
+++ b/fs/udf/directory.c
@@ -162,8 +162,8 @@
 	int padlen;
 
 	if ((!buffer) || (!offset)) {
-		udf_debug("invalidparms\n, buffer=%p, offset=%p\n", buffer,
-			  offset);
+		udf_debug("invalidparms, buffer=%p, offset=%p\n",
+			  buffer, offset);
 		return NULL;
 	}