softdevice_controller: Use always-on mram on 54h

This is a temporary fix until the respective service to request MRAM to
stay awake.
This is needed to guarantee low latencies required by the bluetooth
stack.

Signed-off-by: Jan Müller <[email protected]>

Author: Tschet1

subsys/bluetooth/controller/Kconfig

@@ -44,6 +44,7 @@ config BT_LL_SOFTDEVICE
 	select BT_CTLR_LE_PATH_LOSS_MONITORING_SUPPORT
 	select BT_CTLR_SUBRATING_SUPPORT
 	select BT_LL_SOFTDEVICE_HEADERS_INCLUDE
+	select SOC_NRF54H20_NO_MRAM_LATENCY if SOC_NRF54H20_CPURAD
 	depends on (SOC_SERIES_BSIM_NRFXX || SOC_SERIES_NRF52X || SOC_COMPATIBLE_NRF5340_CPUNET ||\
 			    SOC_NRF54H20_CPURAD || SOC_SERIES_NRF54LX)
 	depends on DT_HAS_NORDIC_BT_HCI_SDC_ENABLED