usb: host: dwc3: Add support for multiple PHYs

DWC3 Ips can have more than 1 PHY for USB2 and 1 PHY for USB3, add support
for a generic number of PHYs and adapt the code to handle a generic
number of PHYs.

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
1 file changed