[WCNCR00169895] misc: tunable beacon miss threshold

[Description]
Add iwpriv cmd to set/query FW setting about beacon miss threshold

Help menu:
iwpriv wlanX driver "set_bcn_th <adhoc> <infra> <withbt>"
iwpriv wlanX driver "get_bcn_th

Verify step:
1. set new threshold then connect to AP (MUST)
2. power down AP to stop advertising beacon frame
3. observe the time gap between last beacon and null frame
   (DUT sent null frame to check connection when beacon timeout)

Change-Id: I3b46cbcbbb3615e97430b99a3cacc64a85fa1185
Feature: misc
Signed-off-by: vick.cheng <vick.cheng@mediatek.com>
CR-Id: WCNCR00169895
Reviewed-on: http://gerrit.mediatek.inc:8080/1262348
CheckPatch: Check Patch <srv_checkpatch@mediatek.com>
Reviewed-by: George Kuo <george.kuo@mediatek.com>
Reviewed-by: Sarick Jiang <sarick.jiang@mediatek.com>
Build: srv_neptune_adm <srv_neptune_adm@mediatek.com>
1 file changed