Wifi : Set default value to number of selective channel scans

Framework uses config_max_initial_scans_on_selective_channels parameter to
configure number of partial SCANs when Wifi is turned ON. Set the default
value to zero.

Change-Id: I2245f6bbd1e56c313c9e6f43e7af459657b457d4
CRs-Fixed: 1101375
1 file changed