Return ERR_PTR(-ENODEV) if rockchip_combphy_xlate fails to
set phy type. This fixes the usb dwc3 controller probe fail
if the phy type has been set to PCIe. With this patch, the
rk1808 can support PCIe and USB 2.0 at the same time.
Change-Id: I1cd58f720cb361e606f5e2ac761b9ca71ddaa67e
Signed-off-by: William Wu <william.wu@rock-chips.com>