[C26][C43] updates

C26:

• add HDMI-IN support
• add SGTL5000 audio support
• remove unused multi-video unified overlays
• add DP video support
• add LVDS ChB 800x480 video support
• remove duplicated HDMI-IN pinctrl entries

C26, C43:

• nonfunctional: clear dts of unused node