machine: mars-board: Use rk3066a-marsboard.dts, now it is merged upstream
machine: mars-board: Use rk3066a-marsboard.dts, now it is merged upstream

hizukiayaka/meta-rockchip,twoerner/meta-rockchip-twoerner,hizukiayaka/meta-rockchip,hizukiayaka/meta-rockchip,twoerner/meta-rockchip-twoerner