ARM: dts: orange-pi-zero-plus2: enable USB OTG port

Enable support for USB OTG port on Orange Pi Zero Plus 2 (both H3 and H5
variants). As, according to the board schematics, the USB OTG port cannot
provide power to external devices, we set dr_mode to peripheral.

Signed-off-by: Diego Rondini <diego.rondini@kynetics.com>
Link: https://lore.kernel.org/r/20200615130223.34464-1-diego.rondini@kynetics.com


Signed-off-by: Maxime Ripard <maxime@cerno.tech>