rockchip: rk3399: Add Nanopi M4 2GB board support

commit b2f5da9dd068 ("rockchip: rk3399: Add Nanopi M4 board support") added
support for Nanopi M4 board with Dual-Channel 4GB LPDDR3-1866 RAM.
This patch adds another variant of NanoPi M4 board with Dual-Channel
2GB DDR3-1866 RAM.

Signed-off-by: Deepak Das <deepakdas.linux@gmail.com>
5 files changed