MAINTAINERS: Update feiyang,st7701 panel bindings converted as YAML

The feiyang,fy07024di26a30d.txt and sitronix,st7701.txt has been
converted to YAML schemas, update MAINTAINERS to match them again.

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200403142453.25307-3-jagan@amarulasolutions.com

MAINTAINERS

@@ -5273,7 +5273,7 @@ DRM DRIVER FOR FEIYANG FY07024DI26A30-D MIPI-DSI LCD PANELS
 M:	Jagan Teki <jagan@amarulasolutions.com>
 S:	Maintained
 F:	drivers/gpu/drm/panel/panel-feiyang-fy07024di26a30d.c
-F:	Documentation/devicetree/bindings/display/panel/feiyang,fy07024di26a30d.txt
+F:	Documentation/devicetree/bindings/display/panel/feiyang,fy07024di26a30d.yaml
 
 DRM DRIVER FOR GRAIN MEDIA GM12U320 PROJECTORS
 M:	Hans de Goede <hdegoede@redhat.com>
@@ -5416,7 +5416,7 @@ DRM DRIVER FOR SITRONIX ST7701 PANELS
 M:	Jagan Teki <jagan@amarulasolutions.com>
 S:	Maintained
 F:	drivers/gpu/drm/panel/panel-sitronix-st7701.c
-F:	Documentation/devicetree/bindings/display/panel/sitronix,st7701.txt
+F:	Documentation/devicetree/bindings/display/panel/sitronix,st7701.yaml
 
 DRM DRIVER FOR SITRONIX ST7586 PANELS
 M:	David Lechner <david@lechnology.com>