Disable NXP 'adaptive frame drop' by default.

It's unclear what use cases this algorithm is tuned for but standard
GStreamer QoS does a much better job. This one causes severe jitter
if down stream can't keep up for whatever reason, it's also flip-
flopping between dropping and not dropping frames for an arbitrary
200 ms window.

Change-Id: I0d89eb55bf0c7b63d4a5a5c1917ef5d862419f68