dt-bindings: display: add Amlogic MIPI DSI Host Controller bindings

The Amlogic G12A, G12B & SM1 SoCs embeds a Synopsys DW-MIPI-DSI
transceiver (ver 1.21a) with a custom glue managing the IP resets,
clock and data inputs similar to the DW-HDMI Glue on the same
Amlogic SoC families.

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230512-amlogic-v6-4-upstream-dsi-ccf-vim3-v5-6-56eb7a4d5b8e@linaro.org