pinctrl: uniphier: Add USB device pinmux settings

Add USB device pinmux settings for PXs2 and PXs3 SoCs. Only pins for
ports 0 and 1 support USB device mode.

Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Link: https://lore.kernel.org/r/1643376903-18623-4-git-send-email-hayashi.kunihiko@socionext.com


Signed-off-by: Linus Walleij <linus.walleij@linaro.org>