machine: rk3066: Use SoC specific assignments
machine: rk3066: Use SoC specific assignments

In this way the modifications will be used on all RK3066 boards.

Signed-off-by: Eddie Cai <7881276579abdfee5de1ac41997b4876ff2d1c35@gmail.com>
Reviewed-by: Trevor Woerner <8835777cd84fba3d7873eabbbe1f2de2d3f25b00@gmail.com>
Reviewed-by: Romain Perier <b3f268131c5a6ec066690d62d0a6c5c2b0bbcd85@collabora.com>

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