Add support to receive synx test cmds, and forward it to ICP FW.
Synx on ICP will process that cmd, and send a response. This
response is returned to the caller. The objective of this
infrastructure is to allow synx test app to validate synx
functionality on ICP without running any actual use-case.
CRs-Fixed: 3448052
Change-Id: I3785264f74c5c698146f4de1a82d25fe141cfc2a
Signed-off-by: Karthik Anantha Ram <quic_kartanan@quicinc.com>