[API-134][wifi][Ping]add cmd change sta PM work mode to fix ping delay case

Change-Id: I27cd96f837ef6829f1d4a81cb3dcf4469c680ade
diff --git a/lib/liblynq-wifi6/libwifi6.c b/lib/liblynq-wifi6/libwifi6.c
index d0c3c32..cb85035 100755
--- a/lib/liblynq-wifi6/libwifi6.c
+++ b/lib/liblynq-wifi6/libwifi6.c
@@ -370,7 +370,11 @@
         usleep(300*1000);
         system("wpa_cli -iwpa_wlan0_cmd -p/var/run/ IFNAME=ap0 disconnect");
     }
-
+    ret = system("wl -i wlan0 PM 0");
+    if( ret != 0)
+    {
+        printf("Set sta PM work mode to 0 fail,ret is%d",ret);
+    }
     if (g_ap_watcher_pid == 0 ) {
         ret=pthread_create(&g_ap_watcher_pid,NULL,APWatcherThreadProc,NULL);
         if(ret<0){