[media] st-delta: debug: trace stream/frame information & summary

Adds some trace points showing input compressed stream or
output decoded frame information.
Adds an unconditional trace point when streaming starts showing
the compressed stream and the decoded frame information.
Adds an unconditional trace point at instance closure summarizing
into a single line the decoding process (stream information, decoded
and output frames number, potential errors observed).

Acked-by: Peter Griffin <peter.griffin@linaro.org>
Signed-off-by: Hugues Fruchet <hugues.fruchet@st.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>