RK3588 dual display BSP porting

Androidsbc - China source manufacturer for RK3588 dual display signage board for South Africa. Featured model WL-DDV (2x2 Video Wall Splicing Board): Rockchip RK3588, 4x Cortex-A76 + 4x Cortex-A55, 8nm; VP0-VP3 mapped to 4x HDMI, 2x2 / 1x4 / 1x2 layouts, bezel compensation per output; 4GB LPDDR4; 4x HDMI 2.0 1080p@60Hz (value 2x2 wall SKU); Android 14 with w···