qcacld-3.0: Change STA default keep alive time from 60 to 30

AP has less keep alive timer than STA, so AP is kicking out the STA and
sending the deauth.

To resolve this change CFG_INFRA_STA_KEEP_ALIVE_PERIOD_DEFAULT value from
60 to 30.

Change-Id: I0522071bc634b029178de6e09c11d237351a334d
CRs-Fixed: 2616279

components/mlme/dispatcher/inc/cfg_mlme_sta.h

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2012-2019, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2012-2020, The Linux Foundation. All rights reserved.
  *
  * Permission to use, copy, modify, and/or distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
@@ -30,7 +30,7 @@
  *
  * @Min: 0
  * @Max: 1000
- * @Default: 60
+ * @Default: 30
  *
  * This ini is used to control how frequently STA should send NULL frames to AP
  * (period in seconds) to notify AP of its existence.
@@ -47,7 +47,7 @@
 	"gStaKeepAlivePeriod", \
 	0, \
 	1000, \
-	60, \
+	30, \
 	CFG_VALUE_OR_DEFAULT, \
 	"send default NULL frame to AP")