regulator: rzg2l-usbphy: Add new driver

Add a new regulator driver to control the USB VBUS supply on the Renesas
RZ/G2L and related SoCs.

Reviewed-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
Signed-off-by: Paul Barker <paul.barker.ct@bp.renesas.com>
3 files changed