staging: wilc1000: use TAG_PARAM_OFFSET define

TAG_PARAM_OFFSET is defined at top of this file so that it is used
to simplify codes.
Signed-off-by: Chaehyun Lim <chaehyun.lim@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/wilc1000/coreconfigurator.c

@@ -178,10 +178,8 @@ static inline void get_ssid(u8 *data, u8 *ssid, u8 *p_ssid_len)
 	u8 i   = 0;
 	u8 j   = 0;
 
-	len = data[MAC_HDR_LEN + TIME_STAMP_LEN + BEACON_INTERVAL_LEN +
-		   CAP_INFO_LEN + 1];
-	j   = MAC_HDR_LEN + TIME_STAMP_LEN + BEACON_INTERVAL_LEN +
-		CAP_INFO_LEN + 2;
+	len = data[TAG_PARAM_OFFSET + 1];
+	j   = TAG_PARAM_OFFSET + 2;
 
 	if (len >= MAX_SSID_LEN)
 		len = 0;
@@ -335,10 +333,8 @@ s32 wilc_parse_network_info(u8 *msg_buffer,
 		tim_elm = get_tim_elm(msa, rx_len + FCS_LEN, index);
 		if (tim_elm)
 			network_info->dtim_period = tim_elm[3];
-		ies = &msa[MAC_HDR_LEN + TIME_STAMP_LEN + BEACON_INTERVAL_LEN +
-			   CAP_INFO_LEN];
-		ies_len = rx_len - (MAC_HDR_LEN + TIME_STAMP_LEN +
-				    BEACON_INTERVAL_LEN + CAP_INFO_LEN);
+		ies = &msa[TAG_PARAM_OFFSET];
+		ies_len = rx_len - TAG_PARAM_OFFSET;
 
 		if (ies_len > 0) {
 			network_info->ies = kmemdup(ies, ies_len, GFP_KERNEL);