* Add initial support for FriendlyARM Nanopi R2s
One net port not working yet.
* Enable 2nd network, rename it to lan0, adjust motd to see lan*
* Added rk3328 dmc devfreq driver
* Fixed SD card issues for NanoPi R2s
* Added usb serial gadget console for NanoPi R2s
Co-authored-by: Piotr Szczepanik <piter75@gmail.com>
