phy: sun4i-usb: Add D1 variant

D1 has a register layout like A100 and H616, with the moved SIDDQ bit.
Unlike H616 it does not have any dependencies between PHY instances.

Signed-off-by: Samuel Holland <samuel@sholland.org>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>