qcacld-3.0: Send roam triggers from vendor cmd to firmware

Userspace can configure different roam triggers as defined
in qca_vendor_roam_triggers through the roam subcmd
QCA_WLAN_VENDOR_ROAMING_SUBCMD_CONTROL_SET and the
attribute QCA_ATTR_ROAM_CONTROL_TRIGGERS. Send the roam trigger
bitmap to firmware

Change-Id: I692110a2ae1ee5a35bb248b9138080a7dfb02cf6
CRs-Fixed: 2508776
8 files changed