imx: ventana: update LVDS support

Enable LVDS display detection and panel-specific configuration

Make I2C based LVDS detection and configuration model specific:
- not all boards support LVDS connectors; fail detection that do not
  support LVDS to avoid misdetecting an I2C device as a display
- GPIO configuration is panel specific; use panel name where needed

Signed-off-by: Tim Harvey <tharvey@gateworks.com>
1 file changed