brcmfmac: deal with NL80211_CHANWIDTH_20_NOHT setting

The driver can get a channel definition with bandwidth set to
NL80211_CHANWIDTH_20_NOHT. This was no handled in brcmfmac which
results in a warning splat. One scenario in which this is observed
was when running hostapd with configuration 'hw_mode=g'.

Cc: Jon Nettleton <jon.nettleton@gmail.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>

Author: Arend van Spriel

drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c

@@ -352,6 +352,7 @@ static u16 chandef_to_chanspec(struct brcmu_d11inf *d11inf,
 	ch_inf.chnum = ieee80211_frequency_to_channel(ch->center_freq1);
 	primary_offset = ch->center_freq1 - ch->chan->center_freq;
 	switch (ch->width) {
+	case NL80211_CHAN_WIDTH_20_NOHT:
 	case NL80211_CHAN_WIDTH_20:
 		ch_inf.bw = BRCMU_CHAN_BW_20;
 		WARN_ON(primary_offset != 0);