ieee802154: mcr20a: fix indentation, remove tabs

The are a couple of statments that are one level too deep, fix this by
removing tabs.
Signed-off-by: NColin Ian King <colin.king@canonical.com>
Signed-off-by: NStefan Schmidt <stefan@datenfreihafen.org>

drivers/net/ieee802154/mcr20a.c

@@ -905,9 +905,9 @@ mcr20a_irq_clean_complete(void *context)
 		}
 		break;
 	case (DAR_IRQSTS1_RXIRQ | DAR_IRQSTS1_SEQIRQ):
-			/* rx is starting */
-			dev_dbg(printdev(lp), "RX is starting\n");
-			mcr20a_handle_rx(lp);
+		/* rx is starting */
+		dev_dbg(printdev(lp), "RX is starting\n");
+		mcr20a_handle_rx(lp);
 		break;
 	case (DAR_IRQSTS1_RXIRQ | DAR_IRQSTS1_TXIRQ | DAR_IRQSTS1_SEQIRQ):
 		if (lp->is_tx) {