arm64: dts: imx8mq-librem5: add USB type-c properties for role switching

Add the connector properties to the USB type-c stanza to enable (PD)
role-switching on the Librem 5 phone.
Signed-off-by: NAngus Ainslie <angus@akkea.ca>
Signed-off-by: NMartin Kepplinger <martin.kepplinger@puri.sm>
Signed-off-by: NShawn Guo <shawnguo@kernel.org>

arch/arm64/boot/dts/freescale/imx8mq-librem5.dtsi

@@ -773,6 +773,10 @@
 		interrupt-names = "irq";
 
 		connector {
+			compatible = "usb-c-connector";
+			label = "USB-C";
+			data-role = "dual";
+
 			ports {
 				#address-cells = <1>;
 				#size-cells = <0>;