dt-bindings: usb: renesas, usb3-peri: Document RZ/V2M r9a09g011 support

Document the RZ/V2M SoC bindings.
The RZ/V2M SoC is a little different to the R-Car implementations.
A few DRD related registers and bits have moved, there is a separate
interrupt for DRD, an additional clock for register access and reset
lines for DRD and USBP.

Reviewed-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com>
Link: https://lore.kernel.org/r/20220804192220.128601-2-phil.edworthy@renesas.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>