wlan: Use request manager while processing driver commands

We are transitioning to the new request manager framework. Change
hdd_driver_command() to this framework.

Issue: SEC-1813
Change-Id: Ia486bb4f8a8dd638665b0501d124f5c25f9db99b
CRs-Fixed: 2228608
(cherry picked from commit becd48980e844f5c6cb567b6ccf65a5a745ef773)
1 file changed