Add a new mode with a pair of new NAPI events, NAPI_EVT_USR_SERIAL
and NAPI_EVT_USR_NORMAL, which allows client force NAPI to move all
instances onto the same CPU and peg them there (blacklist); and
to move back to normal mode of operation.
This part implements the HIF portion. Goes with the corresponding
HDD code.
Change-Id: Id301267d654ef24de706f81b0bd712ed751d8265
CRs-Fixed: 1078976
458fefc8bd