build: fix check for GstJpegParser
build: fix check for GstJpegParser

Right now the local JPEG parser is always compiled because the check for the
upstreamed version is broken: it looks for an non existent symbol:
GstJpegImage.

This patch changes that check for< GstJpegFrameHdr.

Signed-off-by: Víctor Manuel Jáquez Leal <4955886a7d0bd82ff6afce9ed1e93fbb85ab8088@intel.com>

ceyusa/gstreamer-vaapi,01org/iotg-lin-gfx-gstreamer-vaapi,ceyusa/gstreamer-vaapi,GStreamer/gstreamer-vaapi,01org/iotg-lin-gfx-gstreamer-vaapi,CapOM/gstreamer-vaapi,CapOM/gstreamer-vaapi,GStreamer/gstreamer-vaapi,01org/iotg-lin-gfx-gstreamer-vaapi,CapOM/gstreamer-vaapi