Do not put usb-phy into reset if clearing the usb-phy reset or
setting the suspend_override has failed.
Reorder (de)asserts like in arch/mips/ath79/dev-usb.c.
Add an optional reset_control "usb-phy-analog", which is needed for
ar934x SoCs like in the old mach-driver arch/mips/ath79/dev-usb.c.
Signed-off-by: Johann Neuhauser <johann@it-neuhauser.de>