msm: audio: qdsp5v2: Broadcast fake audpp enable message

For multiple playback session for the first session audpp
Is enabled and successive sessions audpp driver generates
Fake dsp event but not broadcast the audpp layer enable message.

If two sessions are active, and if one of the session issues audpp
Disable command audpp driver generates the fake audpp disable event
to ACDB driver as one more session still active.

This patch address to broadcast fake audpp enable and disable message.

CRs-Fixed: 300489
CRs-Fixed: 304331
Signed-off-by: Santosh Mardi <gsantosh@codeaurora.org>