sunxi: H616: OrangePi Zero 2: enable USB power supply
The OrangePi Zero 2 has a USB VBUS regulator, controlled by pin PC16.
This is correctly described in the DT, but the patches for supporting
this are still pending.
Meanwhile add our good old CONFIG_USB1_VBUS_PIN to the defconfig file,
to enable power on the USB port and allow using a USB flash drive, for
instance.
Fixes: 6acc5fa581b4 ("sunxi: H616: enable USB support for H616 boards") Reported-by: Mikhail Kalashnikov <iuncuim@gmail.com> Signed-off-by: Andre Przywara <andre.przywara@arm.com>