phy: rockchip-inno-usb2: add support of usb2-phy for rk3228 SoCs

This adds support usb2-phy for rk3228 SoCs and amend phy Documentation.

Signed-off-by: Frank Wang <frank.wang@rock-chips.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
2 files changed