mfd: Fix twl4030-irq typo

overwriten -> overwritten
Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

drivers/mfd/twl4030-irq.c

@@ -492,7 +492,7 @@ static void twl4030_sih_bus_sync_unlock(struct irq_data *data)
 			u8	bytes[4];
 		} imr;
 
-		/* byte[0] gets overwriten as we write ... */
+		/* byte[0] gets overwritten as we write ... */
 		imr.word = cpu_to_le32(agent->imr << 8);
 		agent->imr_change_pending = false;