cfg80211: in bitrate_mask, rename mcs to ht_mcs

Rename NL80211_TXRATE_MCS to NL80211_TXRATE_HT and also
rename mcs to ht_mcs in struct cfg80211_bitrate_mask.

Signed-off-by: Janusz Dziedzic <janusz.dziedzic@tieto.com>
[reword commit message]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index 884ac69..6c3a650 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -1766,7 +1766,7 @@
 struct cfg80211_bitrate_mask {
 	struct {
 		u32 legacy;
-		u8 mcs[IEEE80211_HT_MCS_MASK_LEN];
+		u8 ht_mcs[IEEE80211_HT_MCS_MASK_LEN];
 	} control[IEEE80211_NUM_BANDS];
 };
 /**