qcacld-3.0: Fix INI force_start_sap doesn't take effect
FEATURE_WLAN_CH_AVOID_EXT isn’t defined for HMT, just defined for HSP,
so restriction_mask isn’t checked in policy_mgr_is_safe_channel, SAP
can't start on unsafe channel even INI force_start_sap=1.
Change-Id: Ie75f62d8649ac9c735a34e83b3d3d786976888bf
CRs-Fixed: 3547298