drivers: ieee802154: cc13xx_cc26xx: Don't filter beacon for OpenThread

OpenThread network discovery was not working.
The radio driver is filtering the beacon packets whereas
this is required for OpenThread.
Allow receiving beacon packets.

Signed-off-by: Alexandre Bailon <abailon@baylibre.com>

Author: anobli

drivers/ieee802154/ieee802154_cc13xx_cc26xx.c

@@ -738,7 +738,11 @@ static struct ieee802154_cc13xx_cc26xx_data ieee802154_cc13xx_cc26xx_data = {
 			.bStrictLenFilter = 1
 		},
 		.frameTypes = {
+#if defined(CONFIG_NET_L2_OPENTHREAD)
+			.bAcceptFt0Beacon = 1,
+#else
 			.bAcceptFt0Beacon = 0,
+#endif
 			.bAcceptFt1Data = 1,
 			.bAcceptFt2Ack = 0,
 			.bAcceptFt3MacCmd = 1,