imx-gst1.0-plugin: Upgrade version from 4.4.0 to 4.4.2
Update EULA to V26
Enable vpu encoder 8MM
Enalbed date_time in 8MM
1. Refine date time overlay code
2. Use SW compositor in 8MM
Enalbe grecorder in imx8mm
1. Update video source and sink to autovideo source/sink
2. Added VP8 encoding format
3. Change audio recoder to mp1 layer2 to use opensource encoder
4. Remove videodetect with compiling macro
5. Update grecorder command option
Add support for disable audio in recording
Fix ion.h header inclusion to be standard
Signed-off-by: Yuqing Zhu <carol.zhu@nxp.com> Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
