dts: delete-propertry doesn't work at overlay file

[Frank Li <Frank.li@xxxxxxx>]

Alex:

	I found /delete-property/ in imx8mn-tqma8mqnl-mba8mx-usbotg.dtso.
actaully, /delete-property/ doesn't work at overlay file.

&usbotg1 {
	....
        /delete-property/ disable-over-current;
}

'disable-over-current' still be finial dtb file.

And another big issue is

&rst_usb_hub_hog {
        output-low;
};

&sel_usb_hub_hog {
        output-low;
};

You set rst_usb_hub_hog and sel_usb_hub_hog as output-high at dts. You add
output-low here,  so both output-low and output-high exist. It is totally
dependent the order how driver parse these two properties.

May a fix is

&rst_usb_hub_hog {
	status = "disabled";
}

&gpio {
	otg_hog = {
		gpio-hog;
		...
	};
}

I have not your platform, not sure if it work.

Frank