staging: rtl8188eu: Use eth_broadcast_addr() to assign broadcast address

Simplify the code by using eth_broadcast_addr() to assign broadcast
address and removing the unnecessary variable bc_addr.
Signed-off-by: Liu Shixin <liushixin2@huawei.com>
Link: https://lore.kernel.org/r/20210609085650.1269008-2-liushixin2@huawei.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8188eu/core/rtw_mlme_ext.c

@@ -315,7 +315,6 @@ static void issue_beacon(struct adapter *padapter, int timeout_ms)
 	struct mlme_ext_priv *pmlmeext = &padapter->mlmeextpriv;
 	struct mlme_ext_info *pmlmeinfo = &pmlmeext->mlmext_info;
 	struct wlan_bssid_ex *cur_network = &pmlmeinfo->network;
-	u8 bc_addr[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
 
 	pmgntframe = alloc_mgtxmitframe(pxmitpriv);
 	if (!pmgntframe) {
@@ -339,7 +338,7 @@ static void issue_beacon(struct adapter *padapter, int timeout_ms)
 	fctrl = &pwlanhdr->frame_control;
 	*(fctrl) = 0;
 
-	ether_addr_copy(pwlanhdr->addr1, bc_addr);
+	eth_broadcast_addr(pwlanhdr->addr1);
 	ether_addr_copy(pwlanhdr->addr2, myid(&padapter->eeprompriv));
 	ether_addr_copy(pwlanhdr->addr3, cur_network->MacAddress);
 
@@ -605,7 +604,6 @@ static int issue_probereq(struct adapter *padapter,
 	struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
 	struct mlme_ext_priv *pmlmeext = &padapter->mlmeextpriv;
 	int bssrate_len = 0;
-	u8 bc_addr[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
 
 	RT_TRACE(_module_rtl871x_mlme_c_, _drv_notice_, ("+%s\n", __func__));
 
@@ -633,8 +631,8 @@ static int issue_probereq(struct adapter *padapter,
 		ether_addr_copy(pwlanhdr->addr3, da);
 	} else {
 		/*	broadcast probe request frame */
-		ether_addr_copy(pwlanhdr->addr1, bc_addr);
-		ether_addr_copy(pwlanhdr->addr3, bc_addr);
+		eth_broadcast_addr(pwlanhdr->addr1);
+		eth_broadcast_addr(pwlanhdr->addr3);
 	}
 
 	ether_addr_copy(pwlanhdr->addr2, mac);