arm64: dts: renesas: ulcb-kf: add dr_mode property for USB2.0 channel 0

ULCB-KF has a USB2.0 dual-role channel (CN13).
This adds dr_mode property for USB2.0 channel 0 (EHCI/OHCI and HS-USB)
as "otg".
Signed-off-by: Vladimir Barinov <vladimir.barinov@cogentembedded.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

arch/arm64/boot/dts/renesas/ulcb-kf.dtsi

@@ -29,6 +29,7 @@ &can1 {
 };
 
 &ehci0 {
+	dr_mode = "otg";
 	status = "okay";
 };
 
@@ -41,6 +42,7 @@ &hscif0 {
 };
 
 &hsusb {
+	dr_mode = "otg";
 	status = "okay";
 };
 
@@ -133,6 +135,7 @@ i2cswitch4: i2c-switch@71 {
 };
 
 &ohci0 {
+	dr_mode = "otg";
 	status = "okay";
 };