dts:mc3: Fixed OTG mode on DWC3.0

When the dr_mode is set to peripheral, the CC logic driver (PTN5150) does
not start correctly and the power delivery isn't activated on the
USB-C port.

BCS 746-001313

arch/arm64/boot/dts/seconorth/mc3.dtsi

@@ -1077,12 +1077,12 @@ &usb3_0 {
 };
 
 &usb_dwc3_0 {
-	dr_mode = "peripheral";
+	dr_mode = "otg";
 	hnp-disable;
 	srp-disable;
 	adp-disable;
 	usb-role-switch;
-	role-switch-default-mode = "none";
+	role-switch-default-mode = "peripheral";
 	snps,dis-u1-entry-quirk;
 	snps,dis-u2-entry-quirk;
 	status = "okay";