media: dvb: Fix Out-of-Band for PES type decoder filters

Demux plugin only handled OOB commands for decoder filters of type video
or PCR and secure filters.
Setting a pes filter with output other than decoder (not DMX_OUT_DECODER)
is handled as a decoder filter nevertheless in case the pes type is one
that is associated as being of decoder class (such as DMX_PES_AUDIO).
In such case the demux plugin would ignore the OOB command.
This changes corrects this behaviour.

Change-Id: Ic3d1b6d0297fa7500e599b3d3677a5941a449c61
Signed-off-by: Gilad Broner <gbroner@codeaurora.org>