dsp: adm: Update get params packet size

Update apr header packet size in get pp params.
Add header field for the apr packet.
Update the check condition to differentiate between
in-band and out-band case in adm callback.

CRs-Fixed: 2262638
Change-Id: I57ef88e0638c09b203503f4c1cff2f810ef51c6e
Signed-off-by: Vignesh Kulothungan <vigneshk@codeaurora.org>