latona: media_codecs: temporarily revert back to default 720p decoder

There are occasional DSPMMU_FAULTS while playing certain videos using
OMX.TI.Video.Decoder which require investigation. Temporarily revert
back to using the 720P decoder for all the media until a proper fix
is in place.

Change-Id: I8c0bb37ec9520c11045170647f70a8fba9068f0d