mm-video-v4l2: raise onConfigUpdate Event on FBD

For vp9 hdr10plus, upon receiving FBD, onConfigUpdate
needs to be raised which inturn calls getConfig. This
should fetch the hdr10plus metadata from the component
and return to framework.

Change-Id: Ibe6e05bf48a963bb52ce8b85d6313c19da70bdd2
3 files changed