mac80211: Deinline drv_ampdu_action()

With this .config: http://busybox.net/~vda/kernel_config_ALLYES_Os,
after deinlining the function size is 755 bytes and there are
6 callsites.

Total size reduction is about 3.3 kbytes.

Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
CC: Johannes Berg <johannes.berg@intel.com>
CC: John Linville <linville@tuxdriver.com>
CC: Michal Kazior <michal.kazior@tieto.com>
CC: linux-wireless@vger.kernel.org
CC: linux-kernel@vger.kernel.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
diff --git a/net/mac80211/driver-ops.c b/net/mac80211/driver-ops.c
index 1a720e8..e1bb9e04 100644
--- a/net/mac80211/driver-ops.c
+++ b/net/mac80211/driver-ops.c
@@ -189,3 +189,29 @@
 
 	return ret;
 }
+
+int drv_ampdu_action(struct ieee80211_local *local,
+		     struct ieee80211_sub_if_data *sdata,
+		     enum ieee80211_ampdu_mlme_action action,
+		     struct ieee80211_sta *sta, u16 tid,
+		     u16 *ssn, u8 buf_size, bool amsdu)
+{
+	int ret = -EOPNOTSUPP;
+
+	might_sleep();
+
+	sdata = get_bss_sdata(sdata);
+	if (!check_sdata_in_driver(sdata))
+		return -EIO;
+
+	trace_drv_ampdu_action(local, sdata, action, sta, tid,
+			       ssn, buf_size, amsdu);
+
+	if (local->ops->ampdu_action)
+		ret = local->ops->ampdu_action(&local->hw, &sdata->vif, action,
+					       sta, tid, ssn, buf_size, amsdu);
+
+	trace_drv_return_int(local, ret);
+
+	return ret;
+}