iwlwifi: retfactor get_temperature functions

This patch renames iwl4965_get_tempearture to iwl4965_hw_get_temperature
and replaces usage of original iwl4965_hw_get_temperature by
direct access to priv->temperature.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/iwlwifi/iwl4965-base.c b/drivers/net/wireless/iwlwifi/iwl4965-base.c
index 3717f99..14d4432 100644
--- a/drivers/net/wireless/iwlwifi/iwl4965-base.c
+++ b/drivers/net/wireless/iwlwifi/iwl4965-base.c
@@ -3867,7 +3867,7 @@
 	if (!iwl_is_alive(priv))
 		return -EAGAIN;
 
-	return sprintf(buf, "%d\n", iwl4965_hw_get_temperature(priv));
+	return sprintf(buf, "%d\n", priv->temperature);
 }
 
 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);