samples: ipc: ipc_service: Enable sample on nRF7120

Adds overlays for the sample to support nRF7120.

Signed-off-by: Erdem Simsek <erdem.simsek@nordicsemi.no>

Author: erdemsimsek

samples/ipc/ipc_service/Kconfig.sysbuild

@@ -15,3 +15,4 @@ config REMOTE_BOARD
 	default "nrf54lm20dk/nrf54lm20a/cpuflpr" if BOARD_NRF54LM20DK_NRF54LM20A_CPUAPP
 	default "nrf54lm20dk/nrf54lm20b/cpuflpr" if BOARD_NRF54LM20DK_NRF54LM20B_CPUAPP
 	default "nrf54lv10dk/nrf54lv10a/cpuflpr" if BOARD_NRF54LV10DK_NRF54LV10A_CPUAPP
+	default "nrf7120dk/nrf7120/cpuflpr" if BOARD_NRF7120DK_NRF7120_CPUAPP

samples/ipc/ipc_service/boards/nrf7120dk_nrf7120_cpuapp.overlay

@@ -0,0 +1,41 @@
+/*
+ * Copyright (c) 2026 Nordic Semiconductor ASA
+ *
+ * SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
+ */
+
+/ {
+	soc {
+		reserved-memory {
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			sram_rx: memory@20080000 {
+				reg = <0x20080000 0x8000>;
+			};
+
+			sram_tx: memory@20088000 {
+				reg = <0x20088000 0x8000>;
+			};
+		};
+	};
+
+	ipc {
+		ipc0: ipc0 {
+			compatible = "zephyr,ipc-icmsg";
+			tx-region = <&sram_tx>;
+			rx-region = <&sram_rx>;
+			mboxes = <&cpuapp_vevif_rx 20>, <&cpuapp_vevif_tx 21>;
+			mbox-names = "rx", "tx";
+			status = "okay";
+		};
+	};
+};
+
+&cpuapp_vevif_rx {
+	status = "okay";
+};
+
+&cpuapp_vevif_tx {
+	status = "okay";
+};

samples/ipc/ipc_service/boards/nrf7120dk_nrf7120_cpuapp_icbmsg.overlay

@@ -0,0 +1,11 @@
+/*
+ * Copyright (c) 2026 Nordic Semiconductor ASA
+ *
+ * SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
+ */
+
+&ipc0 {
+	compatible = "zephyr,ipc-icbmsg";
+	tx-blocks = <16>;
+	rx-blocks = <18>;
+};

samples/ipc/ipc_service/remote/boards/nrf7120dk_nrf7120_cpuflpr.overlay

@@ -0,0 +1,41 @@
+/*
+ * Copyright (c) 2026 Nordic Semiconductor ASA
+ *
+ * SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
+ */
+
+/ {
+	soc {
+		reserved-memory {
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			sram_tx: memory@20080000 {
+				reg = <0x20080000 0x8000>;
+			};
+
+			sram_rx: memory@20088000 {
+				reg = <0x20088000 0x8000>;
+			};
+		};
+	};
+
+	ipc {
+		ipc0: ipc0 {
+			compatible = "zephyr,ipc-icmsg";
+			tx-region = <&sram_tx>;
+			rx-region = <&sram_rx>;
+			mboxes = <&cpuflpr_vevif_rx 21>, <&cpuflpr_vevif_tx 20>;
+			mbox-names = "rx", "tx";
+			status = "okay";
+		};
+	};
+};
+
+&cpuflpr_vevif_rx {
+	status = "okay";
+};
+
+&cpuflpr_vevif_tx {
+	status = "okay";
+};

samples/ipc/ipc_service/remote/boards/nrf7120dk_nrf7120_cpuflpr_icbmsg.overlay

@@ -0,0 +1,11 @@
+/*
+ * Copyright (c) 2026 Nordic Semiconductor ASA
+ *
+ * SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
+ */
+
+&ipc0 {
+	compatible = "zephyr,ipc-icbmsg";
+	tx-blocks = <18>;
+	rx-blocks = <16>;
+};

samples/ipc/ipc_service/sample.yaml

@@ -208,3 +208,23 @@ tests:
     integration_platforms:
       - nrf54l15dk/nrf54l15/cpuapp
     timeout: 20
+  sample.ipc.ipc_service.nrf7120dk_cpuapp_cpuflpr_icmsg:
+    extra_args:
+      - ipc_service_SNIPPET=nordic-flpr
+    platform_allow:
+      - nrf7120dk/nrf7120/cpuapp
+    integration_platforms:
+      - nrf7120dk/nrf7120/cpuapp
+    timeout: 20
+  sample.ipc.ipc_service.nrf7120dk_cpuapp_cpuflpr_icbmsg:
+    extra_args:
+      - ipc_service_SNIPPET=nordic-flpr
+      - ipc_service_CONFIG_IPC_SERVICE_BACKEND_ICBMSG_NUM_EP=1
+      - ipc_service_EXTRA_DTC_OVERLAY_FILE="boards/nrf7120dk_nrf7120_cpuapp_icbmsg.overlay"
+      - remote_CONFIG_IPC_SERVICE_BACKEND_ICBMSG_NUM_EP=1
+      - remote_EXTRA_DTC_OVERLAY_FILE="boards/nrf7120dk_nrf7120_cpuflpr_icbmsg.overlay"
+    platform_allow:
+      - nrf7120dk/nrf7120/cpuapp
+    integration_platforms:
+      - nrf7120dk/nrf7120/cpuapp
+    timeout: 20