qcacld-3.0: Cleanup blocked scan requests

The following memory leak issues of blocked scan requests
need to be addressed:

1. Add list for blocked scan requests

There could be multiple scan requests are blocked before related
callback can be executed. Currently there is only one pointer
for such requests. A list is added accordingly.

2. Cleanup blocked scan request when ifdown

Scheduled work for blocked scan might not be able to be executed
before ifdown. When the work is cancelled, related scan request is
not freed and will caused memory leak.

Call the relate callback when blocked scan work is cancelled to
cleanup the pending scan request.

Change-Id: Ifb5fc1b14a043ad67e4ba1d305ce4133b471188c
CRs-Fixed: 2166111

0 files changed, 0 insertions, 0 deletions