qcacmn: Suppress the verbose log from policy mgr
When DBS is disabled in WLAN INI file(e.g. on some platforms
where RM chipset is attached), the policy manager will keep
posting a verbose message saying 'DBS is disabled from ini'.
This isn't exhibiting much useful information, and may cause
watchdog bark when SnS stress is running.
Suppress the verbose log by lowering it's debug level.
Change-Id: Ie8d5a1784940f483cc671da43f734851c0b5adb6
CRs-Fixed: 2214201