arm64: dts: imx8mn: Correct the usb power domain

pgc_otg1 is actual the power domain of usb PHY, usb controller
is in hsio power domain, and pgc_otg1 is required to be powered
up to detect usb remote wakeup, so move the pgc_otg1 power domain
to the usb phy node.

Fixes: ea2b5af5 ("arm64: dts: imx8mn: put USB controller into power-domains")
Signed-off-by: Li Jun <jun.li@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm64/boot/dts/freescale/imx8mn.dtsi

@@ -1075,7 +1075,7 @@ usbotg1: usb@32e40000 {
 				assigned-clock-parents = <&clk IMX8MN_SYS_PLL2_500M>;
 				phys = <&usbphynop1>;
 				fsl,usbmisc = <&usbmisc1 0>;
-				power-domains = <&pgc_otg1>;
+				power-domains = <&pgc_hsiomix>;
 				status = "disabled";
 			};
 
@@ -1174,5 +1174,6 @@ usbphynop1: usbphynop1 {
 		assigned-clocks = <&clk IMX8MN_CLK_USB_PHY_REF>;
 		assigned-clock-parents = <&clk IMX8MN_SYS_PLL1_100M>;
 		clock-names = "main_clk";
+		power-domains = <&pgc_otg1>;
 	};
 };