qcacmn: Add support to enable strict passive scan

Normally probe request is sent in a passive channel if the
beacon received from the AP. With the strict passive scan
feature, STA doesnot send the probe request even if it
receives beacon from AP.

This can be enabled by using below command.
iwpriv /cfg80211 wifix pas_scanen 1/0

Added a support to send strict passive scan flag to FW in
cfg80211 framework during scan start command.

Change-Id: Ia2c069872541dba64c3d11fc0b533c2d202ee898
CRs-Fixed: 2280181

os_if/linux/scan/inc/wlan_cfg80211_scan.h

@@ -121,12 +121,14 @@ struct scan_req {
  * @default_ie: default scan ie
  * @half_rate: Half rate flag
  * @quarter_rate: Quarter rate flag
+ * @strict_pscan: strict passive scan flag
  */
 struct scan_params {
 	uint8_t source;
 	struct element_info default_ie;
 	bool half_rate;
 	bool quarter_rate;
+	bool strict_pscan;
 };
 
 /**

os_if/linux/scan/src/wlan_cfg80211_scan.c

@@ -1277,6 +1277,9 @@ int wlan_cfg80211_scan(struct wlan_objmgr_pdev *pdev,
 	else if (params->quarter_rate)
 		req->scan_req.scan_f_quarter_rate = true;
 
+	if (params->strict_pscan)
+		req->scan_req.scan_f_strict_passive_pch = true;
+
 	if ((request->n_ssids == 1) && request->ssids &&
 	   !qdf_mem_cmp(&request->ssids[0], "DIRECT-", 7))
 		is_p2p_scan = true;