tree bbb3e08c3b1f8b34ea8d88c911765f098cb52df9
parent 6e21faffe71fd4d14d02dfa8c0e76cb32eb2b567
author Nicolas Dufresne <nicolas.dufresne@collabora.com> 1513193987 -0500
committer Nicolas Dufresne <nicolas.dufresne@collabora.com> 1513194145 -0500

v4l2object: Use a debug object for tracing

This way we can pass the pad name instead of the element for tracing
which helps identifying which v4l2object is used withing M2M element
like decoder, encoder and transform. For the reference, pads are name
<parent-name>:<pad-name>.