qcacld-3.0: Introduce new INI to configure roam trigger parameters

Add new ini to configure various roam trigger parameters:
1. "minimum_btm_candidate_score"
   Consider the AP as roam candidate only if its score is greater
   than minimum_btm_candidate_score. This value will be sent over
   the WMI_BTM_OFFLOAD_CONFIG command.

2. "roam_scan_inactivity_time"
   Device inactivity monitoring time in  milliseconds for which
   the device is considered to be inactive with data packets
   count is less than configured roam_inactive_count.

3. "roam_inactive_data_packet_count"
   Maximum allowed data packets count during
   roam_scan_inactivity_time.

4. "roam_scan_period_after_inactivity"
   Roam scan period in ms after device was in inactive state.

5. "btm_roam_score_delta"
   Roam scan delta value for btm triggered roam scan. This value
   will be sent to firmware over the WMI_ROAM_AP_PROFILE wmi
   command.

6. "idle_roam_score_delta"
   Roam scan delta value for Idle roam scan trigger reason. This
   value will be sent to firmware over the WMI_ROAM_AP_PROFILE
   wmi commnd in the roam_score_delta_param_list tlv.

7. "disconnect_roam_trigger_min_rssi"
   Candidate minimum rssi value for disconnect roam trigger. This
   value will be sent to firmware over the WMI_ROAM_AP_PROFILE
   wmi commnd in the roam_score_min_rssi_param_list tlv.

8. "beacon_miss_roam_min_rssi"
   Candidate minimum rssi value for BTM triggered roam. This
   value will be sent to firmware over the WMI_ROAM_AP_PROFILE
   wmi commnd in the roam_score_min_rssi_param_list tlv.

9. "bss_load_trigger_5g_rssi_threshold"
   If connected AP is in 5GHz band, then consider bss load roam
   triggered only if load % > bss_load_threshold && connected AP
   rssi is worse than bss_load_trigger_5g_rssi_threshold.

10. "bss_load_trigger_2g_rssi_threshold"
   If connected AP is in 2GHz band, then consider bss load roam
   triggered only if load % > bss_load_threshold && connected AP
   rssi is worse than bss_load_trigger_2g_rssi_threshold.

Change-Id: Ib026251a8ec403f4376a16a91ff1b5d969336816
CRs-Fixed: 2434922
9 files changed