arm64: dts: hisilicon: hi3670.dtsi: add iomcu_rst

This is required in order to support USB.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Wei Xu <xuwei5@hisilicon.com>

arch/arm64/boot/dts/hisilicon/hi3670.dtsi

@@ -194,6 +194,12 @@ media2_crg: media2_crgctrl@e8900000 {
 			#clock-cells = <1>;
 		};
 
+		iomcu_rst: reset {
+			compatible = "hisilicon,hi3660-reset";
+			hisi,rst-syscon = <&iomcu>;
+			#reset-cells = <2>;
+		};
+
 		uart0: serial@fdf02000 {
 			compatible = "arm,pl011", "arm,primecell";
 			reg = <0x0 0xfdf02000 0x0 0x1000>;