tests: drivers: gpio: Enable hpf_gpio_basic_api on nRF7120

Enables hpf_gpio_basic_api on nRF7120.

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

Author: erdemsimsek

tests/drivers/gpio/hpf_gpio_basic_api/boards/nrf7120dk_nrf7120_cpuapp.overlay

@@ -0,0 +1,23 @@
+/*
+ * Copyright (c) 2026 Nordic Semiconductor ASA
+ *
+ * SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
+ */
+
+/* Test requires GPIO loopback between P2.00 and P1.01. */
+
+/ {
+	resources {
+		compatible = "test-hpf-gpio";
+		out-gpios = <&hpf_gpio 0 GPIO_ACTIVE_HIGH>;
+		in-gpios = <&gpio1 1 GPIO_ACTIVE_HIGH>;
+	};
+};
+
+&gpiote20 {
+	status = "okay";
+};
+
+&gpio1 {
+	status = "okay";
+};

tests/drivers/gpio/hpf_gpio_basic_api/testcase.yaml

@@ -13,6 +13,7 @@ common:
     - nrf54lm20dk/nrf54lm20a/cpuapp
     - nrf54lm20dk/nrf54lm20b/cpuapp
     - nrf54lv10dk/nrf54lv10a/cpuapp
+    - nrf7120dk/nrf7120/cpuapp
   integration_platforms:
     - nrf54l15dk/nrf54l15/cpuapp
   sysbuild: true

tests/drivers/gpio/hpf_gpio_more_loops/boards/nrf7120dk_nrf7120_cpuapp.overlay

@@ -0,0 +1,29 @@
+/*
+ * Copyright (c) 2026 Nordic Semiconductor ASA
+ *
+ * SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
+ */
+
+/* Test requires GPIO loopback between P2.09 and P1.01. */
+
+/ {
+	/* Test requirements:
+	 * out-gpios[0] wire connected with in-gpios[0],
+	 * out-gpios[1] wire connected with in-gpios[1],
+	 * etc.
+	 * Output-input GPIO pair must have identical active level flag.
+	 * All outputs must be on the same device.
+	 */
+	zephyr,user {
+		out-gpios = <&hpf_gpio 9 GPIO_ACTIVE_HIGH>;
+		in-gpios = <&gpio1 1 GPIO_ACTIVE_HIGH>;
+	};
+};
+
+&gpiote20 {
+	status = "okay";
+};
+
+&gpio1 {
+	status = "okay";
+};