pinctrl: sh-pfc: r8a77990: Revise USB ID pin name

Since the datasheet Rev.1.00 has an error about the USB ID pin name,
this patch revises it.

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>