tests: uart: async: esp32h2: Add config

Add test config for ESP32-H2.

Signed-off-by: Raffael Rostagno <[email protected]>

Author: Raffael Rostagno

tests/drivers/uart/uart_async_api/socs/esp32h2.conf

@@ -0,0 +1,2 @@
+CONFIG_HEAP_MEM_POOL_SIZE=32768
+CONFIG_DMA=y

tests/drivers/uart/uart_async_api/socs/esp32h2.overlay

@@ -0,0 +1,31 @@
+/*
+ * Copyright (c) 2025 Espressif Systems (Shanghai) Co., Ltd.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+&pinctrl {
+	uart1_test: uart1_test {
+		group1 {
+			pinmux = <UART1_TX_GPIO2>;
+			input-enable;
+		};
+		group2 {
+			pinmux = <UART1_RX_GPIO2>;
+			output-enable;
+		};
+	};
+};
+
+dut: &uart1 {
+	status = "okay";
+	current-speed = <115200>;
+	pinctrl-0 = <&uart1_test>;
+	pinctrl-names = "default";
+	dmas = <&dma 0>, <&dma 1>;
+	dma-names = "rx", "tx";
+};
+
+&dma {
+	status = "okay";
+};