phy: phy-rockchip-inno-usb2: add reset support

Add reset handling support, which is needed for proper
operation with RK3588.

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Link: https://lore.kernel.org/r/20230522170324.61349-4-sebastian.reichel@collabora.com


Signed-off-by: Vinod Koul <vkoul@kernel.org>