UBI: print less

UBI currently prints a lot of information when it mounts a volume, which
bothers some people. Make it less chatty - print only important information
by default.

Get rid of 'dbg_msg()' macro completely.

Reported-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
diff --git a/drivers/mtd/ubi/wl.c b/drivers/mtd/ubi/wl.c
index bd05276..032fc57 100644
--- a/drivers/mtd/ubi/wl.c
+++ b/drivers/mtd/ubi/wl.c
@@ -1201,7 +1201,7 @@
 {
 	struct ubi_wl_entry *e;
 
-	dbg_msg("schedule PEB %d for scrubbing", pnum);
+	ubi_msg("schedule PEB %d for scrubbing", pnum);
 
 retry:
 	spin_lock(&ubi->wl_lock);