libs: utils: guard the VAEntrypointFEI symbol
libs: utils: guard the VAEntrypointFEI symbol

VAEntrypointFEI appeared in libva 2.0.0 (API version 1.0.0)

ceyusa/gstreamer-vaapi,GStreamer/gstreamer-vaapi,ceyusa/gstreamer-vaapi,GStreamer/gstreamer-vaapi