mpegtsdemux: Fix definition of ATSC for AC-3 audio

Submitted by Gabby Park

Link to original bug (#768939)

Description

Created attachment 331751
mpegtsdemux: Fix definition of ATSC for AC-3

The ATSC specification was described in ATSC A/65:2013 for MPEG-2 Transport Stream.
There is mismatch between the specification document and gstmpegtsdescriptor code.
So I moved descriptor_tag(0x81) as defined in GstMpegtsMiscDescriptorType to ATSC field and removed the unused descriptor_tag(0x83) defined in GstMpegtsATSCDescriptorType.

Additionally, I added a descriptor_tag(0xCC) for E-AC-3 audio stream.
Thanks.

Patch 331751, "mpegtsdemux: Fix definition of ATSC for AC-3":
0001-mpegtsdemux-Fix-definition-of-ATSC-for-AC-3-audio.patch