net: rsi: mac80211: constify ieee80211_ops

ieee80211_ops are not supposed to change at runtime. All functions
working with ieee80211_ops provided by <net/mac80211.h> work with
const ieee80211_ops. So mark the non-const structs as const.
Signed-off-by: NArvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: NKalle Valo <kvalo@codeaurora.org>

drivers/net/wireless/rsi/rsi_91x_mac80211.c

@@ -1503,7 +1503,7 @@ static void rsi_mac80211_rfkill_poll(struct ieee80211_hw *hw)
 	mutex_unlock(&common->mutex);
 }
 
-static struct ieee80211_ops mac80211_ops = {
+static const struct ieee80211_ops mac80211_ops = {
 	.tx = rsi_mac80211_tx,
 	.start = rsi_mac80211_start,
 	.stop = rsi_mac80211_stop,