regulator: renesas-usb-vbus-regulator: Update the default

As the "rzg2l-usb-vbus-regulator" platform device is only created by
drivers/reset/reset-rzg2l-usbphy-ctrl.c, update the default stricter by
replacing ARCH_RZG2L->RESET_RZG2L_USBPHY_CTRL.

Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reported-by: Geert Uytterhoeven <geert+renesas@glider.be>
Closes: https://lore.kernel.org/all/CAMuHMdX5ayWbLEEa6nAipECVB6H9eCpRg21pu3zYrTdiER0F+Q@mail.gmail.com/
Link: https://patch.msgid.link/20240715134120.312610-1-biju.das.jz@bp.renesas.com


Signed-off-by: Mark Brown <broonie@kernel.org>