thermal: rcar_thermal: add R8A77970 support

Add the R-Car V3M (R8A77970) SoC support to the R-Car gen2 thermal driver.
The hardware is the same as in the R-Car D3 (R8A77995) plus the CIVM status
register (we don't use).
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>

drivers/thermal/rcar_thermal.c

@@ -124,6 +124,10 @@ static const struct of_device_id rcar_thermal_dt_ids[] = {
 		.compatible = "renesas,rcar-gen2-thermal",
 		 .data = &rcar_gen2_thermal,
 	},
+	{
+		.compatible = "renesas,thermal-r8a77970",
+		.data = &rcar_gen3_thermal,
+	},
 	{
 		.compatible = "renesas,thermal-r8a77995",
 		.data = &rcar_gen3_thermal,