iwlagn: use SKU information in the EEPROM

EEPROM contain the SKU information for the device, use it.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn.c b/drivers/net/wireless/iwlwifi/iwl-agn.c
index d976912..59af06d 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn.c
@@ -4134,6 +4134,10 @@
 	if (err)
 		goto out_free_eeprom;
 
+	err = iwl_eeprom_check_sku(priv);
+	if (err)
+		goto out_free_eeprom;
+
 	/* extract MAC Address */
 	iwl_eeprom_get_mac(priv, priv->addresses[0].addr);
 	IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->addresses[0].addr);