video: stm32: STM32 driver support for LVDS

video: stm32: STM32 driver support for LVDS

The LVDS Display Interface Transmitter handles the LVDS protocol:
it maps the pixels received from the upstream Pixel-DMA (LTDC)
onto the LVDS PHY.

The LVDS controller driver supports the following high-level features:
        • FDP-Link-I and OpenLDI (v0.95) protocols
        • Single-Link or Dual-Link operation
        • Single-Display or Double-Display (with the same content
          duplicated on both)
        • Flexible Bit-Mapping, including JEIDA and VESA
        • RGB888 or RGB666 output
        • Synchronous design, with one input pixel per clock cycle
        • No resolution limitation.

Acked-by: Yannick Fertre <yannick.fertre@foss.st.com>
Signed-off-by: Raphael Gallais-Pou <raphael.gallais-pou@foss.st.com>