tests: drivers: build_all: add renesas_lvd test configurations

Add build test configuration for renesas_lvd on Renesas RA boards
that currently support the comparator driver on LVD.

Signed-off-by: The Nguyen <[email protected]>

Author: thenguyenyf

tests/drivers/build_all/comparator/renesas_lvd/lvd.overlay

@@ -0,0 +1,15 @@
+/*
+ * Copyright (c) 2025 Renesas Electronics Corporation
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+&lvd1 {
+	lvd-action = "maskable-interrupt";
+	voltage-level = <3>;
+	interrupts = <90 12>;
+	interrupt-names = "lvd";
+	lvd-trigger = "falling";
+	reset-negation-timing = <1>;
+	status = "okay";
+};

tests/drivers/build_all/comparator/testcase.yaml

@@ -124,3 +124,9 @@ tests:
       - DTC_OVERLAY_FILE="nxp_cmp/frdm_mcxc242.dts"
     platform_allow:
       - frdm_mcxc242
+  drivers.build_all.comparator.renesas_lvd:
+    extra_args:
+      - DTC_OVERLAY_FILE="renesas_lvd/lvd.overlay"
+    platform_allow:
+      - ek_ra8m1
+      - ek_ra8p1/r7ka8p1kflcac/cm85