debugfs-related mode_t whack-a-mole

all of those should be umode_t...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c
index c6a383d..e5a3c7b 100644
--- a/drivers/mmc/card/block.c
+++ b/drivers/mmc/card/block.c
@@ -1685,7 +1685,7 @@
 
 	if ((md->area_type & MMC_BLK_DATA_AREA_BOOT) &&
 	     card->ext_csd.boot_ro_lockable) {
-		mode_t mode;
+		umode_t mode;
 
 		if (card->ext_csd.boot_ro_lock & EXT_CSD_BOOT_WP_B_PWR_WP_DIS)
 			mode = S_IRUGO;