Userspace disables the roam control config once it's done with
the controlled roaming. Driver should restore the params changed
by roam control config enable and proceed with roaming as per
its default behavior.
Restore the below params which are getting modified as per
the current implementation,
1. Roam trigger bitmap
2. Scoring
3. Scan period
4. Full scan period
Change-Id: I1be699825bdd798f20a3432ebccb922ade67f89b
CRs-Fixed: 2508780
b6798ec303