Create UART device tree overlays(s) for ROC-RK3328-CC Renegade

I’m not experienced enough with creating these or I’d do it myself. It would be nice to make use of the GPIO header on these boards given their power. Please add them! Alternatively, I wouldn’t mind putting together the correct code and making a pull request on github with the right guidance.

There are two disabled UARTs.

		uart1 = "/serial@ff120000";
		uart2 = "/serial@ff130000";

You just need to change pwm2 to uart1/2 in this: libretech-wiring-tool/pwm2.dts at master · libre-computer-project/libretech-wiring-tool · GitHub

This change has already been made to the master branch.