boot: zephyr: moonlight watchdogs

adding WATCHDOG_FEED support for WDT30 and WDT31

Signed-off-by: Mateusz Michalek <mateusz.michalek@nordicsemi.no>
diff --git a/boot/zephyr/Kconfig b/boot/zephyr/Kconfig
index baa807c..908b793 100644
--- a/boot/zephyr/Kconfig
+++ b/boot/zephyr/Kconfig
@@ -1,5 +1,6 @@
 # Copyright (c) 2017-2020 Linaro Limited
 # Copyright (c) 2020 Arm Limited
+# Copyright (c) 2023 Nordic Semiconductor ASA
 #
 # SPDX-License-Identifier: Apache-2.0
 #
@@ -665,6 +666,8 @@
 	imply NRFX_WDT if SOC_FAMILY_NRF
 	imply NRFX_WDT0 if SOC_FAMILY_NRF
 	imply NRFX_WDT1 if SOC_FAMILY_NRF
+	imply NRFX_WDT30 if SOC_FAMILY_NRF
+	imply NRFX_WDT31 if SOC_FAMILY_NRF
 	help
 	  Enables implementation of MCUBOOT_WATCHDOG_FEED() macro which is
 	  used to feed watchdog while doing time consuming operations.