dt-bindings: ili9881c: Document 7" Raspberry Pi 720x1280

Document the 7" Raspberry Pi 720x1280 DSI panel based on ili9881.

Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20250608142908.54121-1-marek.vasut+renesas@mailbox.org

Author: Marek Vasut

Documentation/devicetree/bindings/display/panel/ilitek,ili9881c.yaml

@@ -19,6 +19,7 @@ properties:
           - ampire,am8001280g
           - bananapi,lhr050h41
           - feixin,k101-im2byl02
+          - raspberrypi,dsi-7inch
           - startek,kd050hdfia020
           - tdo,tl050hdv35
           - wanchanglong,w552946aba