dt-bindings: display: seiko,43wvf1g: Change the maintainer's contact

Marco's NXP email is no longer valid.

Marco told me offline that he has no interest to be listed as the
maintainer contact for this binding, so add my contact.

Signed-off-by: Fabio Estevam <festevam@denx.de>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230329201150.741106-1-festevam@gmail.com

Documentation/devicetree/bindings/display/panel/seiko,43wvf1g.yaml

@@ -7,7 +7,7 @@ $schema: http://devicetree.org/meta-schemas/core.yaml#
 title: Seiko Instruments Inc. 4.3" WVGA (800 x RGB x 480) TFT with Touch-Panel
 
 maintainers:
-  - Marco Franchi <marco.franchi@nxp.com>
+  - Fabio Estevam <festevam@gmail.com>
 
 allOf:
   - $ref: panel-common.yaml#