ath6kl: improve endianness handling

Replace ntohs with be16_to_cpu to do endian conversions for ethhdr
h_proto assignment.
Signed-off-by: Kenneth Lu <kuohsianglu@gmail.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

drivers/net/wireless/ath/ath6kl/txrx.c

@@ -1001,7 +1001,7 @@ static void aggr_slice_amsdu(struct aggr_info *p_aggr,
 
 	while (amsdu_len > mac_hdr_len) {
 		hdr = (struct ethhdr *) framep;
-		payload_8023_len = ntohs(hdr->h_proto);
+		payload_8023_len = be16_to_cpu(hdr->h_proto);
 
 		if (payload_8023_len < MIN_MSDU_SUBFRAME_PAYLOAD_LEN ||
 		    payload_8023_len > MAX_MSDU_SUBFRAME_PAYLOAD_LEN) {