iwlagn: change default beacon interval

When the PAN context is active, but unused, it
may still block scans that take more dwell time
than its beacon interval (which is odd). Work
around this problem by using a default beacon
interval of 200 so scans will fit between.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>

drivers/net/wireless/iwlwifi/iwl-dev.h

@@ -81,7 +81,7 @@ struct iwl_tx_queue;
 #define MAX_RTS_THRESHOLD         2347U
 #define MAX_MSDU_SIZE		  2304U
 #define MAX_MPDU_SIZE		  2346U
-#define DEFAULT_BEACON_INTERVAL   100U
+#define DEFAULT_BEACON_INTERVAL   200U
 #define	DEFAULT_SHORT_RETRY_LIMIT 7U
 #define	DEFAULT_LONG_RETRY_LIMIT  4U