Bluetooth: Controller: Use SOC_COMPATIBLE for setting SDC lib variant

This way is more generic than using SOC_SERIES_NRF54LX.
The SOC_COMPATIBLE kconfig entry will also work for Babblesim.

Signed-off-by: Rubin Gerritsen <[email protected]>

Author: rugeGerritsen

subsys/bluetooth/controller/Kconfig

@@ -324,7 +324,7 @@ choice BT_LL_SOFTDEVICE_VARIANT
 						     BT_ISO || \
 						     SOC_COMPATIBLE_NRF5340_CPUNET || \
 						     SOC_NRF54H20_CPURAD || \
-						     SOC_SERIES_NRF54LX)
+						     SOC_COMPATIBLE_NRF54LX)
 	default BT_LL_SOFTDEVICE_CENTRAL if BT_OBSERVER
 	default BT_LL_SOFTDEVICE_PERIPHERAL if BT_BROADCASTER
 	help