Program the AR_TSFOOR_THRESHOLD register with a default lifted from
authoradrian <adrian@ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f>
Sun, 27 Apr 2014 23:35:05 +0000 (23:35 +0000)
committeradrian <adrian@ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f>
Sun, 27 Apr 2014 23:35:05 +0000 (23:35 +0000)
commit1a3a5fc6289009b51ce538beca366d3472e7c7e5
tree2b8383eda620a5dbde2632d7525ef6f95c305c24
parenta2e0312da4a37d4622aa32e2eff79615dbefab5a
Program the AR_TSFOOR_THRESHOLD register with a default lifted from
the QCA HAL.

This fires off an interrupt if the TSF from the AP / IBSS peer is
wildly out of range.  I'll add some code to the ath(4) driver soon
which makes use of this.

TODO:

* verify this didn't break TDMA!

git-svn-id: svn://svn.freebsd.org/base/head@265031 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f
sys/dev/ath/ath_hal/ar5416/ar5416_beacon.c