arm: dts: revpi-flat-s-2022: Use dwc2 usb (this blocks [REVPI-3831])
The XHCI usb controller can only be used if otg_mode=1
is present in
/boot/config.txt. Although Raspberry Pi is about to relase an updated version
of their bootloader which can detect if the xhci controller is wanted from dt,
we cannot use this feature without a proper release from them. Thus use the
dwc2 controller like we do on other devices for now.
Signed-off-by: Nicolai Buchwitz n.buchwitz@kunbus.com