ARM: renesas: Enable USBHS UDC and UMS on Renesas R-Car Gen3 Salvator-X(S)

ARM: renesas: Enable USBHS UDC and UMS on Renesas R-Car Gen3 Salvator-X(S)

The Renesas R-Car Gen3 Salvator-X(S) boards contain USB micro-B port
on which the USBHS controller is accessible. Enable the USBHS UDC
driver to make this port usable, enable UMS USB Mass Storage support
to make it possible to expose block devices as USB Mass Storage to
Host PC.

The USB VID/PID is picked from R-Car Series, 3rd Generation reference
manual Rev.2.00 chapter 19.2.8 USB download mode, and matches R-Car H3
BootROM USB download mode VID/PID.

Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>