iwlagn: no 5.2GHz/HT40 support for bgn devices

For bgn devices, there were no HT40 channels value in EEPROM

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
diff --git a/drivers/net/wireless/iwlwifi/iwl-2000.c b/drivers/net/wireless/iwlwifi/iwl-2000.c
index c8bb4a4..0bd9b14 100644
--- a/drivers/net/wireless/iwlwifi/iwl-2000.c
+++ b/drivers/net/wireless/iwlwifi/iwl-2000.c
@@ -278,7 +278,7 @@
 			EEPROM_REG_BAND_4_CHANNELS,
 			EEPROM_REG_BAND_5_CHANNELS,
 			EEPROM_6000_REG_BAND_24_HT40_CHANNELS,
-			EEPROM_REG_BAND_52_HT40_CHANNELS
+			EEPROM_REGULATORY_BAND_NO_HT40,
 		},
 		.acquire_semaphore = iwlcore_eeprom_acquire_semaphore,
 		.release_semaphore = iwlcore_eeprom_release_semaphore,