dt-bindings: display: himax-hx8394: Add Microchip AC40T08A MIPI Display panel

Add compatible string for the Microchip's AC40T08A MIPI Display
panel.This panel uses a Himax HX8394 display controller.
The reset line is not populated and leads to driver probe issues,
thus add conditional block to narrow reset-gpio property per variant.

Signed-off-by: Manikandan Muralidharan <manikandan.m@microchip.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20240701085837.50855-2-manikandan.m@microchip.com


Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240701085837.50855-2-manikandan.m@microchip.com