MAINTAINERS: Update entry for st7703 driver after the rename

The driver was renamed, change the path in the MAINTAINERS file.
Signed-off-by: Ondrej Jirman <megous@megous.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://lore.kernel.org/lkml/20200701184640.1674969-1-megous@megous.com/#t

MAINTAINERS

@@ -5594,12 +5594,13 @@ S:	Maintained
 F:	Documentation/devicetree/bindings/display/panel/raydium,rm67191.yaml
 F:	drivers/gpu/drm/panel/panel-raydium-rm67191.c
 
-DRM DRIVER FOR ROCKTECH JH057N00900 PANELS
+DRM DRIVER FOR SITRONIX ST7703 PANELS
 M:	Guido Günther <agx@sigxcpu.org>
 R:	Purism Kernel Team <kernel@puri.sm>
+R:	Ondrej Jirman <megous@megous.com>
 S:	Maintained
-F:	Documentation/devicetree/bindings/display/panel/rocktech,jh057n00900.txt
-F:	drivers/gpu/drm/panel/panel-rocktech-jh057n00900.c
+F:	Documentation/devicetree/bindings/display/panel/rocktech,jh057n00900.yaml
+F:	drivers/gpu/drm/panel/panel-sitronix-st7703.c
 
 DRM DRIVER FOR SAVAGE VIDEO CARDS
 S:	Orphan / Obsolete