qcacmn: Add runtime suspend logic for scan

Add runtime suspend logic for scan, to block runtime suspend when
scan is started and unblock when scan is completed.

Change-Id: I61c9afaf996d1ac97bfb5ffb0cd8a3abc971051e
CRs-Fixed: 2035675

os_if/linux/scan/inc/wlan_cfg80211_scan.h

@@ -81,10 +81,12 @@ typedef struct {
  * struct osif_scan_pdev - OS scan private strcutre
  * scan_req_q: Scan request queue
  * req_id: Scan request Id
-*/
+ * runtime_pm_lock: Runtime suspend lock
+ */
 struct osif_scan_pdev{
 	qdf_list_t scan_req_q;
 	wlan_scan_requester req_id;
+	qdf_runtime_lock_t runtime_pm_lock;
 };
 
 /*