qcacmn: Add rct_validity_timer and disassoc_timer to wmi roam structures

Two new WCNSS_qcom.ini values "btm_validity_timer" and
"disassoc_timer" are introduced. These values are sent to
firmware over the structures wmi_roam_offload_tlv_param and
wmi_btm_config_fixed_param respectively. The values to this
structure are populated from struct roam_offload_scan_params.

Add rct_validity_timer in roam_offload_scan_params.
Populate these values from roam request to the structure
roam_offload_scan_params to be sent over the wmi command.

Change-Id: I6130e9966d520169b0f74b9726d35aa4fef6d81d
CRs-Fixed: 2369040

wmi/inc/wmi_unified_roam_param.h

@@ -515,6 +515,8 @@ struct hlp_params {
  * @btm_solicited_timeout: Timeout value for waiting BTM request
  * @btm_max_attempt_cnt: Maximum attempt for sending BTM query to ESS
  * @btm_sticky_time: Stick time after roaming to new AP by BTM
+ * @disassoc_timer_threshold: threshold value till which the firmware can
+ * wait before triggering the roam scan after receiving the disassoc iminent
  */
 struct wmi_btm_config {
 	uint8_t vdev_id;
@@ -522,6 +524,7 @@ struct wmi_btm_config {
 	uint32_t btm_solicited_timeout;
 	uint32_t btm_max_attempt_cnt;
 	uint32_t btm_sticky_time;
+	uint32_t disassoc_timer_threshold;
 };
 
 /**