ARM: dts: r8a7742-iwg21d-q7: Enable cmt0

Enable cmt0 support on r8a7742-iwg21d-q7 board.
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Marian-Cristian Rotariu <marian-cristian.rotariu.rb@bp.renesas.com>
Link: https://lore.kernel.org/r/20200806183152.11809-2-prabhakar.mahadev-lad.rj@bp.renesas.comSigned-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

arch/arm/boot/dts/r8a7742-iwg21d-q7.dts

@@ -131,6 +131,10 @@ sgtl5000: codec@a {
 	};
 };
 
+&cmt0 {
+	status = "okay";
+};
+
 &hsusb {
 	pinctrl-0 = <&usb0_pins>;
 	pinctrl-names = "default";