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/io.c b/drivers/mtd/ubi/io.c
index 2bebb39..a84f0db 100644
--- a/drivers/mtd/ubi/io.c
+++ b/drivers/mtd/ubi/io.c
@@ -167,8 +167,8 @@
 		}
 
 		if (read != len && retries++ < UBI_IO_RETRIES) {
-			dbg_io("error %d while reading %d bytes from PEB %d:%d, "
-			       "read only %zd bytes, retry",
+			dbg_io("error %d while reading %d bytes from PEB %d:%d,"
+			       " read only %zd bytes, retry",
 			       err, len, pnum, offset, read);
 			yield();
 			goto retry;
@@ -705,8 +705,8 @@
 
 	if (hdr_crc != crc) {
 		if (verbose) {
-			ubi_warn("bad EC header CRC at PEB %d, calculated %#08x,"
-				 " read %#08x", pnum, crc, hdr_crc);
+			ubi_warn("bad EC header CRC at PEB %d, calculated "
+				 "%#08x, read %#08x", pnum, crc, hdr_crc);
 			ubi_dbg_dump_ec_hdr(ec_hdr);
 		}
 		return UBI_IO_BAD_EC_HDR;