Add initial support for Nanopi R1 board with below features:
- U-Boot 2019.01
- Linux 5.0
- Default packages from buildroot
Configuration files taken from Armbian:
https://github.com/armbian/build/blob/master/patch
Signed-off-by: Davide Viti <zinosat@gmail.com>
[Thomas: move U-Boot config and DT to board/friendlyarm/nanopi-r1/uboot/]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
