Add support for the Rocktech RK050HR345-CT106A RGB panel. This model
uses an Ilitek ILI9806E controller over the SPI bus for initialization
and register configuration only.

The driver is designed to be easily extensible to support other panels
with different sequences and timings by providing a specific descriptor
structure for each model.

Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>

The generated .S files for fonts and splash screens use .incbin with the
full prerequisite path. When building with O= this bakes an absolute
path into the .S file. If the build directory is later used on a
different machine (e.g. in a container), the assembler cannot find the
source file.

Follow the existing DTB convention: rename the object targets to use
compound suffixes (.ttf.o, .bmp.o), switch the pattern rules from
direct $(call cmd,...) to FORCE + $(call if_changed,...), and register
the new suffixes with intermediate_targets so that kbuild loads their
.cmd files. This lets if_changed detect when the recorded command
(including source paths) has changed and regenerate the .S file
automatically.

The EFI rule is left unchanged since its prerequisite is a generated
file in the build directory, like the DTB and DTBO rules.

The intermediate_targets entries stay in scripts/Makefile.build rather
than moving to scripts/Makefile.lib-u-boot, because that file is
included before intermediate_targets is defined and 'targets' is ':=',
so a '$(call intermediate_targets, ...)' inside it would expand to
empty and silently drop the entries. To keep the upstream block
untouched, the U-Boot additions go in a separate 'targets +=' block
immediately below.

Suggested-by: Rasmus Villemoes <ravi@prevas.dk>
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Rasmus Villemoes <ravi@prevas.dk>

The logic for how to handle this video driver is slightly odd. Only in
the case of when CONFIG_VIDEO_LCD_PANEL_EDP_4_LANE_1620M_VIA_ANX9804 is
enabled do we need to have this file built, and otherwise we have a
dummy function in use. Correct the logic by only building this file when
needed.

Signed-off-by: Tom Rini <trini@konsulko.com>

This driver is unused. Remove it.

Signed-off-by: Tom Rini <trini@konsulko.com>

Add support for PWM backlight found in Samsung CMC623 image converter.

Signed-off-by: Ion Agorria <ion@agorria.com>
Reviewed-by: Svyatoslav Ryhel <clamor95@gmail.com>
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>

Samsung S6E63M0 controller is found in some OLED panels like one used in
the Samsung Captivate Glide. Currently only DBI C panel is implemented.

Signed-off-by: Ion Agorria <ion@agorria.com>
Reviewed-by: Svyatoslav Ryhel <clamor95@gmail.com>
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>

Sony L4F00430T01 LCD module is found in Samsung Galaxy R. The panel has a
WVGA resolution (480x800) and is setup over SPI, video data comes from RGB.

Signed-off-by: Ion Agorria <ion@agorria.com>
Reviewed-by: Svyatoslav Ryhel <clamor95@gmail.com>
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>

Add support for Skyworks AAT2870 LED Backlight Driver and Multiple LDO
Lighting Management Unit. Only backlight is supported as for now. Supported
backlight level range is from 2 to 255 with step of 1.

Tested-by: Ion Agorria <ion@agorria.com>
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>

LG LH400WV3-SD04 is a color active matrix TFT (Thin Film Transistor)
liquid crystal display (LCD). The resolution of a 4" contains 480 x 800
pixels.

Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>

Hitachi TX10D07VM0BAA is a color active matrix TFT (Thin Film Transistor)
liquid crystal display (LCD). The resolution of a 4" contains 480 x 800
pixels.

Tested-by: Ion Agorria <ion@agorria.com>
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>