boards: nrf54h20dk: add xip variant for cpuflpr

While executing from MRAM will likely never happen in practice for the
FLPR core, add such variant for testing.

Signed-off-by: Gerard Marull-Paretas <gerard@teslabs.com>

boards/nordic/nrf54h20dk/Kconfig.nrf54h20dk

@@ -6,4 +6,5 @@ config BOARD_NRF54H20DK
 	select SOC_NRF54H20_CPURAD if BOARD_NRF54H20DK_NRF54H20_CPURAD
 	select SOC_NRF54H20_CPUPPR if BOARD_NRF54H20DK_NRF54H20_CPUPPR || \
 				      BOARD_NRF54H20DK_NRF54H20_CPUPPR_XIP
-	select SOC_NRF54H20_CPUFLPR if BOARD_NRF54H20DK_NRF54H20_CPUFLPR
+	select SOC_NRF54H20_CPUFLPR if BOARD_NRF54H20DK_NRF54H20_CPUFLPR || \
+				       BOARD_NRF54H20DK_NRF54H20_CPUFLPR_XIP

boards/nordic/nrf54h20dk/board.yml

@@ -6,3 +6,5 @@ board:
     variants:
     - name: xip
       cpucluster: cpuppr
+    - name: xip
+      cpucluster: cpuflpr

boards/nordic/nrf54h20dk/nrf54h20dk_nrf54h20_cpuflpr_xip.dts

@@ -0,0 +1,7 @@
+/*
+ * Copyright (c) 2024 Nordic Semiconductor ASA
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include "nrf54h20dk_nrf54h20_cpuflpr.dts"

boards/nordic/nrf54h20dk/nrf54h20dk_nrf54h20_cpuflpr_xip.yaml

@@ -0,0 +1,14 @@
+# Copyright (c) 2024 Nordic Semiconductor ASA
+# SPDX-License-Identifier: Apache-2.0
+
+identifier: nrf54h20dk/nrf54h20/cpuflpr/xip
+name: nRF54H20-DK-nRF54H20-FLPR (MRAM XIP)
+type: mcu
+arch: riscv
+toolchain:
+  - zephyr
+sysbuild: true
+ram: 46
+flash: 48
+supported:
+  - gpio

boards/nordic/nrf54h20dk/nrf54h20dk_nrf54h20_cpuflpr_xip_defconfig

@@ -0,0 +1,13 @@
+# Copyright (c) 2024 Nordic Semiconductor ASA
+# SPDX-License-Identifier: Apache-2.0
+
+# Enable UART driver
+CONFIG_SERIAL=y
+
+# Enable console
+CONFIG_CONSOLE=y
+CONFIG_UART_CONSOLE=y
+
+CONFIG_USE_DT_CODE_PARTITION=y
+
+CONFIG_XIP=y