dt-bindings: display: simple: Add BOE EV121WXM-N10-1850 panel

Add BOE EV121WXM-N10-1850 12.1" WXGA (1280x800) TFT LCD panel
compatible string.  The panel has a LVDS display interface.

The panel's product specification can be found at:
http://www.onetech.com.tw/files/EV121WXM-N10-1850ProductSpecification_20180801.pdf

Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Liu Ying <victor.liu@nxp.com>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230508083826.1016206-2-victor.liu@nxp.com

Documentation/devicetree/bindings/display/panel/panel-simple.yaml

@@ -77,6 +77,8 @@ properties:
       - auo,t215hvn01
         # Shanghai AVIC Optoelectronics 7" 1024x600 color TFT-LCD panel
       - avic,tm070ddh03
+        # BOE EV121WXM-N10-1850 12.1" WXGA (1280x800) TFT LCD panel
+      - boe,ev121wxm-n10-1850
         # BOE HV070WSA-100 7.01" WSVGA TFT LCD panel
       - boe,hv070wsa-100
         # BOE OPTOELECTRONICS TECHNOLOGY 10.1" WXGA TFT LCD panel