drivers: display: features for ILI9341 driver

Added documentation for doc/releases/migration-guide-4.4.rst
in reference with the changes on the ili9xxx driver.
Information on document updated.

Signed-off-by: Nicolas Moreno <[email protected]>

Author: NickIOT72

doc/releases/migration-guide-4.4.rst

@@ -32,6 +32,15 @@ Boards
 Device Drivers and Devicetree
 *****************************
 
+Display
+=======
+
+* For ILI9XXX controllers, the usage of `ILI9XXX_PIXEL_FORMAT_x` in devicetrees for panel color format selection
+  has been updated to `PANEL_PIXEL_FORMAT_x`. Out-of-tree boards and shields should be updated accordingly.
+  (:github:`99267`).
+* For ILI9341 driver, display mirroring configuration has been updated to conform with the described behavior
+  of the sample `samples/drivers/display`. (:github:`99267`).
+
 QSPI
 ===