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-2000.c b/drivers/net/wireless/iwlwifi/iwl-2000.c
index 54d931d..3e1cdd3 100644
--- a/drivers/net/wireless/iwlwifi/iwl-2000.c
+++ b/drivers/net/wireless/iwlwifi/iwl-2000.c
@@ -179,7 +179,7 @@
 			EEPROM_6000_REG_BAND_24_HT40_CHANNELS,
 			EEPROM_REGULATORY_BAND_NO_HT40,
 		},
-		.update_enhanced_txpower = iwlcore_eeprom_enhanced_txpower,
+		.update_enhanced_txpower = iwl_eeprom_enhanced_txpower,
 	},
 	.temperature = iwlagn_temperature,
 };
@@ -200,7 +200,7 @@
 			EEPROM_6000_REG_BAND_24_HT40_CHANNELS,
 			EEPROM_REGULATORY_BAND_NO_HT40,
 		},
-		.update_enhanced_txpower = iwlcore_eeprom_enhanced_txpower,
+		.update_enhanced_txpower = iwl_eeprom_enhanced_txpower,
 	},
 	.temperature = iwlagn_temperature,
 };