rtlwifi: Uses addr1 instead DA to determine broadcast and multicast addr.

We should check addr1 to indicate a packet as broadcast or multicast
in tx desc. An obvious example, a STA transmit an *unicast* ARP packet
where addr1 and DA are the addresses of AP and broadcast respectively.
Signed-off-by: NPing-Ke Shih <pkshih@realtek.com>
Signed-off-by: NLarry Finger <Larry.Finger@lwfinger.net>
Cc: Yan-Hsuan Chuang <yhchuang@realtek.com>
Cc: Birming Chiu <birming@realtek.com>
Cc: Shaofu <shaofu@realtek.com>
Cc: Steven Ting <steventing@realtek.com>
Signed-off-by: NKalle Valo <kvalo@codeaurora.org>

drivers/net/wireless/realtek/rtlwifi/base.c

@@ -1166,9 +1166,9 @@ void rtl_get_tcb_desc(struct ieee80211_hw *hw,
 			}
 		}
 
-		if (is_multicast_ether_addr(ieee80211_get_DA(hdr)))
+		if (is_multicast_ether_addr(hdr->addr1))
 			tcb_desc->multicast = 1;
-		else if (is_broadcast_ether_addr(ieee80211_get_DA(hdr)))
+		else if (is_broadcast_ether_addr(hdr->addr1))
 			tcb_desc->broadcast = 1;
 
 		_rtl_txrate_selectmode(hw, sta, tcb_desc);