[nrf fromlist] drivers: retained_mem: nrf: align dependencies to nrf54h20

nRF54H20 cpuapp and cpurad are compatible with retained_mem.

Upstream PR: zephyrproject-rtos/zephyr#79271

Signed-off-by: Nikodem Kastelik <[email protected]>
(cherry picked from commit a7bae79f96059656395a119ac4f42786ea473559)

Author: nika-nordic

drivers/retained_mem/Kconfig.nrf

@@ -13,6 +13,7 @@ config RETAINED_MEM_NRF_RAM_CTRL
 	bool "nRF RAM retention driver"
 	default y
 	depends on DT_HAS_ZEPHYR_RETAINED_RAM_ENABLED && RETAINED_MEM_ZEPHYR_RAM && POWEROFF
-	depends on SOC_SERIES_NRF52X || SOC_SERIES_NRF53X || SOC_SERIES_NRF54LX || SOC_SERIES_NRF91X
+	depends on SOC_SERIES_NRF52X || SOC_SERIES_NRF53X || SOC_SERIES_NRF54LX || \
+		   SOC_NRF54H20_CPUAPP || SOC_NRF54H20_CPURAD || SOC_SERIES_NRF91X
 	help
 	  Enable driver for Nordic RAM retention.