tests: i2c: add support for i2c sci on Renesas RA boards

Add board support for EK_RA6M5, EK_RA6M4 i2c test use sci_i2c:
- tests/drivers/i2c/i2c_api

Example for i2c use sci_i2c:

west build -b ek_ra6m5 tests/drivers/i2c/i2c_api/ -p always \
 -DDTC_OVERLAY_FILE=boards/ek_ra6m5_sci_i2c.overlay \
 -DCONF_FILE="boards/ek_ra6m5_sci_i2c.conf"

Signed-off-by: Khai Cao <[email protected]>

Author: khaicaorvc

tests/drivers/i2c/i2c_api/boards/ek_ra6m4_sci_i2c.conf

@@ -0,0 +1,3 @@
+CONFIG_I2C=y
+CONFIG_ZTEST=y
+CONFIG_SENSOR_GY271_QMC=y

tests/drivers/i2c/i2c_api/boards/ek_ra6m4_sci_i2c.overlay

@@ -0,0 +1,19 @@
+/*
+ * Copyright (c) 2025 Renesas Electronics Corporation
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/ {
+	aliases {
+		i2c-0 = &i2c2;
+		gy271 = &i2c2;
+	};
+};
+
+&sci2 {
+	status = "okay";
+
+	i2c2: i2c {
+		status = "okay";
+	};
+};

tests/drivers/i2c/i2c_api/boards/ek_ra6m5_sci_i2c.conf

@@ -0,0 +1,3 @@
+CONFIG_I2C=y
+CONFIG_ZTEST=y
+CONFIG_SENSOR_GY271_QMC=y

tests/drivers/i2c/i2c_api/boards/ek_ra6m5_sci_i2c.overlay

@@ -0,0 +1,19 @@
+/*
+ * Copyright (c) 2025 Renesas Electronics Corporation
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/ {
+	aliases {
+		i2c-0 = &i2c2;
+		gy271 = &i2c2;
+	};
+};
+
+&sci2 {
+	status = "okay";
+
+	i2c2: i2c {
+		status = "okay";
+	};
+};

tests/drivers/i2c/i2c_api/testcase.yaml

@@ -31,6 +31,18 @@ tests:
     extra_args:
       - DTC_OVERLAY_FILE="./boards/${BOARD}${NORMALIZED_BOARD_QUALIFIERS}_sci_b_i2c.overlay"
       - CONF_FILE="./prj.conf ./boards/${BOARD}${NORMALIZED_BOARD_QUALIFIERS}_sci_b_i2c.conf"
+  drivers.i2c.renesas_sci_i2c.api:
+    depends_on: i2c
+    tags:
+      - drivers
+      - i2c
+    filter: dt_alias_exists("gy271") and CONFIG_I2C_RENESAS_RA_SCI
+    platform_allow:
+      - ek_ra6m5
+      - ek_ra6m4
+    extra_args:
+      - DTC_OVERLAY_FILE="./boards/${BOARD}${NORMALIZED_BOARD_QUALIFIERS}_sci_i2c.overlay"
+      - CONF_FILE="./prj.conf ./boards/${BOARD}${NORMALIZED_BOARD_QUALIFIERS}_sci_i2c.conf"
   drivers.i2c.stm32.interrupt_disabled:
     depends_on:
       - i2c