omxaudiodec: Implement hack for not disabling the output port after set_format until the output format is known
omxaudiodec: Implement hack for not disabling the output port after set_format until the output format is known

Needed on some OMX implementations, e.g. the one from Atmel. It does
not send the settings-changed event on the output port if it is
disabled.

surround-io/gst-omx,renesas-rcar/gst-omx,GStreamer/gst-omx,freedesktop-unofficial-mirror/gstreamer__gst-omx,CapOM/gst-omx,renesas-rcar/gst-omx,leio/gst-omx,freedesktop-unofficial-mirror/gstreamer__gst-omx,renesas-rcar/gst-omx,leio/gst-omx,CapOM/gst-omx,ismelykh/gst-omx-deinterlace,GStreamer/gst-omx,CapOM/gst-omx,varunkumara/test-repo,varunkumara/test-repo,surround-io/gst-omx,ismelykh/gst-omx-deinterlace,varunkumara/test-repo,GStreamer/gst-omx