adsprpc: Handle UAF scenario in put_args

Currently, the DSP updates header buffers with unused DMA handle fds.
In the put_args section, if any DMA handle FDs are present in the
header buffer, the corresponding map is freed. However, since the
header buffer is exposed to users in unsigned PD, users can update
invalid FDs. If this invalid FD matches with any FD that is already
in use, it could lead to a use-after-free (UAF) vulnerability.
As a solution,add DMA handle references for DMA FDs, and the map for
the FD will be freed only when a reference is found.

Acked-by: Om Deore <quic_odeore@quicinc.com>
Change-Id: I3c2614451f7b3717236708ee5e9b88f16f6e435d
Signed-off-by: Santosh <quic_ssakore@quicinc.com>