atmel: Use shared constant for rfc1042 header

This is one of the 9 drivers redefining rfc1042_header.
Signed-off-by: Pascal Terjan <pterjan@google.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200523212735.32364-1-pterjan@google.com

drivers/net/wireless/atmel/atmel.c

@@ -798,7 +798,6 @@ static void tx_update_descriptor(struct atmel_private *priv, int is_bcast,
 
 static netdev_tx_t start_tx(struct sk_buff *skb, struct net_device *dev)
 {
-	static const u8 SNAP_RFC1024[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
 	struct atmel_private *priv = netdev_priv(dev);
 	struct ieee80211_hdr header;
 	unsigned long flags;
@@ -853,7 +852,7 @@ static netdev_tx_t start_tx(struct sk_buff *skb, struct net_device *dev)
 	}
 
 	if (priv->use_wpa)
-		memcpy(&header.addr4, SNAP_RFC1024, ETH_ALEN);
+		memcpy(&header.addr4, rfc1042_header, ETH_ALEN);
 
 	header.frame_control = cpu_to_le16(frame_ctl);
 	/* Copy the wireless header into the card */