UBI: fix checkpatch.pl errors and warnings

Just out or curiousity ran checkpatch.pl for whole UBI,
and discovered there are quite a few of stylistic issues.
Fix them.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
diff --git a/drivers/mtd/ubi/vmt.c b/drivers/mtd/ubi/vmt.c
index 4be4014..852482d 100644
--- a/drivers/mtd/ubi/vmt.c
+++ b/drivers/mtd/ubi/vmt.c
@@ -253,7 +253,7 @@
 			goto out_unlock;
 		}
 
-        /* Calculate how many eraseblocks are requested */
+	/* Calculate how many eraseblocks are requested */
 	vol->usable_leb_size = ubi->leb_size - ubi->leb_size % req->alignment;
 	bytes = req->bytes;
 	if (do_div(bytes, vol->usable_leb_size))
@@ -858,7 +858,7 @@
 
 	if (alignment != vol->alignment || data_pad != vol->data_pad ||
 	    upd_marker != vol->upd_marker || vol_type != vol->vol_type ||
-	    name_len!= vol->name_len || strncmp(name, vol->name, name_len)) {
+	    name_len != vol->name_len || strncmp(name, vol->name, name_len)) {
 		ubi_err("volume info is different");
 		goto fail;
 	}