iwlwifi: move _agn statistics related structure

agn and 3945 has different statistics_notif data structure; since 3945
has it statistics_notif data structure inside the _3945 portion of
iwl_priv, it make sense to move the agn statistics_notif into _agn
portion.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-lib.c b/drivers/net/wireless/iwlwifi/iwl-agn-lib.c
index 0e7b066..5f1e7d8 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn-lib.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn-lib.c
@@ -361,7 +361,8 @@
 void iwlagn_temperature(struct iwl_priv *priv)
 {
 	/* store temperature from statistics (in Celsius) */
-	priv->temperature = le32_to_cpu(priv->statistics.general.temperature);
+	priv->temperature =
+		le32_to_cpu(priv->_agn.statistics.general.temperature);
 	iwl_tt_handler(priv);
 }