openh264: Make sure that the pkg-config file has mode 644 instead of 444
openh264: Make sure that the pkg-config file has mode 644 instead of 444

Otherwise we can't modify it, which is needed by the universal build file merger.

nirbheek/cerbero,flexVDI/cerbero,jackjansen/cerbero,freedesktop-unofficial-mirror/gstreamer__sdk__cerbero,ford-prefect/cerbero,flexVDI/cerbero,centricular/cerbero,sdroege/cerbero,shoreflyer/cerbero,shoreflyer/cerbero,fluendo/cerbero,sdroege/cerbero,lubosz/cerbero,ikonst/cerbero,atsushieno/cerbero,nzjrs/cerbero,ramaxlo/cerbero,nzjrs/cerbero,freedesktop-unofficial-mirror/gstreamer__sdk__cerbero,atsushieno/cerbero,superdump/cerbero,nirbheek/cerbero-old,ikonst/cerbero,nirbheek/cerbero,AlertMe/cerbero,fluendo/cerbero,ramaxlo/cerbero,freedesktop-unofficial-mirror/gstreamer__sdk__cerbero,flexVDI/cerbero,ramaxlo/cerbero,multipath-rtp/cerbero,multipath-rtp/cerbero,nirbheek/cerbero,lubosz/cerbero,centricular/cerbero,ford-prefect/cerbero,justinjoy/cerbero,centricular/cerbero,ikonst/cerbero,GStreamer/cerbero,flexVDI/cerbero,fluendo/cerbero,centricular/cerbero,GStreamer/cerbero,atsushieno/cerbero,OptoFidelity/cerbero,justinjoy/cerbero,AlertMe/cerbero,lubosz/cerbero,OptoFidelity/cerbero,centricular/cerbero,EricssonResearch/cerbero,fluendo/cerbero,ikonst/cerbero,superdump/cerbero,nzjrs/cerbero,GStreamer/cerbero,atsushieno/cerbero,EricssonResearch/cerbero,superdump/cerbero,justinjoy/cerbero,justinjoy/cerbero,EricssonResearch/cerbero,nirbheek/cerbero,nzjrs/cerbero,nzjrs/cerbero,ikonst/cerbero,EricssonResearch/cerbero,multipath-rtp/cerbero,fluendo/cerbero,sdroege/cerbero,sdroege/cerbero,freedesktop-unofficial-mirror/gstreamer__cerbero,GStreamer/cerbero,multipath-rtp/cerbero,ramaxlo/cerbero,shoreflyer/cerbero,nirbheek/cerbero-old,nirbheek/cerbero-old,jackjansen/cerbero,flexVDI/cerbero,shoreflyer/cerbero,jackjansen/cerbero,AlertMe/cerbero,freedesktop-unofficial-mirror/gstreamer__cerbero,sdroege/cerbero,freedesktop-unofficial-mirror/gstreamer__cerbero,AlertMe/cerbero,superdump/cerbero,nirbheek/cerbero-old,freedesktop-unofficial-mirror/gstreamer__sdk__cerbero,ford-prefect/cerbero,ramaxlo/cerbero,shoreflyer/cerbero,multipath-rtp/cerbero,OptoFidelity/cerbero,EricssonResearch/cerbero,GStreamer/cerbero,OptoFidelity/cerbero,ford-prefect/cerbero,atsushieno/cerbero,AlertMe/cerbero,jackjansen/cerbero,lubosz/cerbero,freedesktop-unofficial-mirror/gstreamer__cerbero