arm64: dts: rockchip: fix upper usb port on BPI-R2-Pro

- extcon is no more needed in 5.19 - so drop it
  commit 51a9b2c0 ("phy: rockchip-inno-usb2: Handle ID IRQ")
- dr_mode was changed from host to otg in rk356x.dtsi
  commit bc405bb3 ("arm64: dts: rockchip: enable otg/drd
    operation of usb_host0_xhci in rk356x")
  change it back on board level as id-pin on r2pro is not connected
Signed-off-by: Frank Wunderlich <frank-w@public-files.de>
Link: https://lore.kernel.org/r/20220821121929.244112-1-linux@fw-web.deSigned-off-by: Heiko Stuebner <heiko@sntech.de>

arch/arm64/boot/dts/rockchip/rk3568-bpi-r2-pro.dts

@@ -678,7 +678,7 @@ &usb_host0_ohci {
 };
 
 &usb_host0_xhci {
-	extcon = <&usb2phy0>;
+	dr_mode = "host";
 	status = "okay";
 };