drm: rcar-du: lvds: Add r8a77961 support

The M3-W+ SoC has the same LVDS encoder as other R-Car Gen3 chips.
Add support for M3-W+ (R8A77961) SoC to the LVDS encoder driver.
Signed-off-by: Nikita Yushchenko <nikita.yoush@cogentembedded.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>

drivers/gpu/drm/rcar-du/rcar_lvds.c

@@ -901,6 +901,7 @@ static const struct of_device_id rcar_lvds_of_table[] = {
 	{ .compatible = "renesas,r8a7793-lvds", .data = &rcar_lvds_gen2_info },
 	{ .compatible = "renesas,r8a7795-lvds", .data = &rcar_lvds_gen3_info },
 	{ .compatible = "renesas,r8a7796-lvds", .data = &rcar_lvds_gen3_info },
+	{ .compatible = "renesas,r8a77961-lvds", .data = &rcar_lvds_gen3_info },
 	{ .compatible = "renesas,r8a77965-lvds", .data = &rcar_lvds_gen3_info },
 	{ .compatible = "renesas,r8a77970-lvds", .data = &rcar_lvds_r8a77970_info },
 	{ .compatible = "renesas,r8a77980-lvds", .data = &rcar_lvds_gen3_info },