From 4ed15762dce67192d4662860470a8be1f6d5fd53 Mon Sep 17 00:00:00 2001
From: Felix Fietkau <nbd@openwrt.org>
Date: Sat, 14 Dec 2013 18:03:44 +0100
Subject: [PATCH] ath9k_hw: clean up station beacon timer API

Remove unused fields, pass timer info in usec instead of TU.
Preparation for fixing nexttbtt calculation

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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