qcacld-3.0: refine pktlog enable logic in KPI test

PKTLOG can be enabled from both 802.11 and WEXT, customer
integrates pktlog ctrl in script and is toggled frequently.
This leads host pktlog status variable and FW status out of
sync. Host bus vote logic need disable pktlog when TPUT is
high, based on host status. At last, it will not take effect,
KPI continues dropped by PKTLOG.

Change-Id: Ifad7b53060b6046361621bf927c99b6b66e0c278
CRs-Fixed: 2715362