video: Add Meson Video Processing Unit Driver

This adds video output support for Amlogic GXBB/GXL/GXM chips.
The supported ports are CVBS and HDMI (based on DW_HDMI).

When using HDMI, only DMT modes are supported.

There is support for simple-framebuffer (CONFIG_VIDEO_DT_SIMPLEFB)

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Jorge Ramire-Ortiz <jramirez@baylibre.com>
Signed-off-by: Maxime Jourdan <mjourdan@baylibre.com>
[narmstrong: fixed defines alignment in meson_canvas.c]
Reviewed-by: Anatolij Gustschin <agust@denx.de>
diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig
index 25c94f4..2eac4b6 100644
--- a/drivers/video/Kconfig
+++ b/drivers/video/Kconfig
@@ -401,6 +401,8 @@
 	option takes a string in the format understood by 'name_to_gpio'
 	function, e.g. PH1 for pin 1 of port H.
 
+source "drivers/video/meson/Kconfig"
+
 config VIDEO_MVEBU
 	bool "Armada XP LCD controller"
 	default n