ath10k: implement updating shared htt txq state

[Dan Carpenter]

On Mon, Apr 11, 2016 at 09:33:43AM +0200, Michal Kazior wrote:
> > There are several new warnings.  See also:
> 
> This is a false positive.
> 
> The `txq->sta->drv_priv` is a dynamic array which is basically equal
> to `(void *)txq->sta + offsetof(struct ieee80211_sta, drv_priv)`.

Ah, yeah.  You're right.  The other warning should be fixed though.

regards,
dan carpenter