Backport Ansuel Smith's various qca8k feature additions:
- mac-power-sel support
- SGMII PLL explicit enable
- tx/rx clock phase to falling edge
- power-on-sel and LED open drain mode
- cpu port 6
- qca8328 support
- sgmii internal delay
- move port config to dedicated struct
- convert to yaml schema
Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
Signed-off-by: Matthew Hagan <mnhagan88@gmail.com>
