modules: hal_nordic: nrf_802154: CCA threshold config in dBm

The nrf-802154 component of hal_nordic is updated.
The CCA threshold configuration is now done in dBm units, instead of
hardware-dependent scale.
Fixed a bug, where the CONFIG_NRF_802154_CCA_ED_THRESHOLD units were
different from the NRF_802154_CCA_ED_THRESHOLD units. Now all
configuration is done in dBm.

Signed-off-by: Rafał Kuźnia <rafal.kuznia@nordicsemi.no>

modules/hal_nordic/Kconfig

@@ -163,12 +163,12 @@ config NRF_802154_CCA_MODE_CARRIER_OR_ED
 
 endchoice
 
-config NRF_802154_CCA_ED_THRESHOLD
-	int "nRF IEEE 802.15.4 CCA Energy Detection threshold"
-	default 45
+config NRF_802154_CCA_ED_THRESHOLD_DBM
+	int "nRF IEEE 802.15.4 CCA Energy Detection threshold in dBm"
+	default -75
 	help
 	  If energy detected in a given channel is above the value then the
-	  channel is deemed busy. The unit is defined as per 802.15.4-2006 spec.
+	  channel is deemed busy. The unit is dBm.
 
 config NRF_802154_CCA_CORR_THRESHOLD
 	int "nRF IEEE 802.15.4 CCA Correlator threshold"

modules/hal_nordic/nrf_802154/CMakeLists.txt

@@ -52,7 +52,7 @@ target_compile_definitions(zephyr-802154-interface
     # CCA mode options
     NRF_802154_CCA_CORR_LIMIT_DEFAULT=${CONFIG_NRF_802154_CCA_CORR_LIMIT}
     NRF_802154_CCA_CORR_THRESHOLD_DEFAULT=${CONFIG_NRF_802154_CCA_CORR_THRESHOLD}
-    NRF_802154_CCA_ED_THRESHOLD_DEFAULT=${CONFIG_NRF_802154_CCA_ED_THRESHOLD}
+    NRF_802154_CCA_ED_THRESHOLD_DBM_DEFAULT=${CONFIG_NRF_802154_CCA_ED_THRESHOLD_DBM}
 
     # Key storage size
     NRF_802154_SECURITY_KEY_STORAGE_SIZE=${CONFIG_NRF_802154_SECURITY_KEY_STORAGE_SIZE}