iwlagn: Rename iwlcore prefix

There are number of functions with "iwlcore_" prefix which not feels right,
rename those to "iwl_".

No functional changes by making the renames.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn.h b/drivers/net/wireless/iwlwifi/iwl-agn.h
index df2960a..a2f2f28 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn.h
+++ b/drivers/net/wireless/iwlwifi/iwl-agn.h
@@ -287,7 +287,7 @@
 }
 
 /* eeprom */
-void iwlcore_eeprom_enhanced_txpower(struct iwl_priv *priv);
+void iwl_eeprom_enhanced_txpower(struct iwl_priv *priv);
 void iwl_eeprom_get_mac(const struct iwl_priv *priv, u8 *mac);
 
 /* notification wait support */