MAINTAINERS: Add Jessica as a reviewer for drm/panel

As I participate more actively in the drm/panel subsystem, I would
like to get notified about new changes in this area.

Since I have contributed and continue to contribute to drm/panel,
add myself as a reviewer for the DRM panel drivers to help the review
process

Signed-off-by: Jessica Zhang <quic_jesszhan@quicinc.com>
Acked-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230831225738.26527-1-quic_jesszhan@quicinc.com

Author: Jessica Zhang

MAINTAINERS

@@ -7105,6 +7105,7 @@ F:	include/drm/gpu_scheduler.h
 
 DRM PANEL DRIVERS
 M:	Neil Armstrong <neil.armstrong@linaro.org>
+R:	Jessica Zhang <quic_jesszhan@quicinc.com>
 R:	Sam Ravnborg <sam@ravnborg.org>
 L:	dri-devel@lists.freedesktop.org
 S:	Maintained