ufs: Fix debug message in 'ufs_start'

Minor typo fix and rewording of printf message
inside 'ufs_start' which announces the availability
of the UFS device.

Signed-off-by: Bhupesh Sharma <bhupesh.sharma@linaro.org>
diff --git a/drivers/ufs/ufs.c b/drivers/ufs/ufs.c
index 310a18f..6130924 100644
--- a/drivers/ufs/ufs.c
+++ b/drivers/ufs/ufs.c
@@ -1984,7 +1984,7 @@
 			return ret;
 		}
 
-		printf("Device at %s up at:", hba->dev->name);
+		debug("UFS Device %s is up!\n", hba->dev->name);
 		ufshcd_print_pwr_info(hba);
 	}