SPI support for A64-OLinuXino board Allwinner A64 processor

[Gary Otten]

Is there SPI support for this board/processor and what steps would I take
to implement a working SPI interface?  The correct address and pins a  for
the SPI interface appear in the sun50i-a64.dtsi include file for the
default overlay sun50-a64-olinuxino.dts .  What do I need to put in the
loader.conf file to get the driver to load and for the spi devices to
appear in /dev and be usable?