usb: gadget: udc: renesas_usb3: Add support for RZ/V2M

usb: gadget: udc: renesas_usb3: Add support for RZ/V2M

RZ/V2M (r9a09g011) has a few differences:
 - The USB3_DRD_CON register has moved, its called USB_PERI_DRD_CON in
   the RZ/V2M hardware manual.
   It has additional bits for host and peripheral reset that need to
   cleared to use usb host and peripheral respectively.
 - The USB3_OTG_STA, USB3_OTG_INT_STA and USB3_OTG_INT_ENA registers
   have been moved and renamed to USB_PERI_DRD_STA, USB_PERI_DRD_INT_STA
   and USB_PERI_DRD_INT_E.
 - The IDMON bit used in the above regs for role detection have moved
   from bit 4 to bit 0.
 - RZ/V2M has an separate interrupt for DRD, i.e. for changes to IDMON.
 - There are reset lines for DRD and USBP
 - There is another clock, managed by runtime PM.

Whilst the hardware can support 16 pipes, it is artifically limited
based on the ram per pipe calculation. With the 4KB ram per pipe, we
can support 9 pipes consisting of 4xIN pipes, 4xOUT pipes and PIPE0.

Reviewed-by: Biju Das <biju.das.jz@bp.renesas.com>
Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com>
Link: https://lore.kernel.org/r/20220804192220.128601-3-phil.edworthy@renesas.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>