[nrf fromlist] drivers: ieee802154_nrf5: support IEEE802154_SELECTIVE_TXCHANNEL

The ieee802154_nrf5 supports the IEEE802154_SELECTIVE_TXCHANNEL
Kconfig option and advertises the IEEE802154_HW_SELECTIVE_TXCHANNEL
capability.
The ieee802154_nrf5 driver now allows to schedule timed transmission
requests with selective tx channel, that is set at the latest
possible moment. This improves reception performance when the
timed transmissions are requested.

Upstream PR: zephyrproject-rtos/zephyr#79919

Signed-off-by: Damian Krolik <[email protected]>
Signed-off-by: Andrzej Kuroś <[email protected]>

Author: ankuns

drivers/ieee802154/ieee802154_nrf5.c

@@ -255,6 +255,9 @@ static void nrf5_get_capabilities_at_boot(void)
 		((caps & NRF_802154_CAPABILITY_SECURITY) ? IEEE802154_HW_TX_SEC : 0UL)
 #if defined(CONFIG_IEEE802154_NRF5_MULTIPLE_CCA)
 		| IEEE802154_OPENTHREAD_HW_MULTIPLE_CCA
+#endif
+#if defined(CONFIG_IEEE802154_SELECTIVE_TXCHANNEL)
+		| IEEE802154_HW_SELECTIVE_TXCHANNEL
 #endif
 		;
 }
@@ -540,7 +543,11 @@ static bool nrf5_tx_at(struct nrf5_802154_data *nrf5_radio, struct net_pkt *pkt,
 			.dynamic_data_is_set = net_pkt_ieee802154_mac_hdr_rdy(pkt),
 		},
 		.cca = cca,
+#if defined(CONFIG_IEEE802154_SELECTIVE_TXCHANNEL)
+		.channel = net_pkt_ieee802154_txchannel(pkt),
+#else
 		.channel = nrf_802154_channel_get(),
+#endif
 		.tx_power = {
 			.use_metadata_value = true,
 			.power = nrf5_data.txpwr,