iwlwifi: remove support for Narrow Channel (10Mhz)

Setting Narrow Channel bit in the scan command caused the device
not to send probe request on all the channels

Signed-off-by: Guy Cohen <guy.cohen@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/iwlwifi/iwl-eeprom.h

@@ -106,7 +106,7 @@ enum {
 	EEPROM_CHANNEL_ACTIVE = (1 << 3),	/* active scanning allowed */
 	EEPROM_CHANNEL_RADAR = (1 << 4),	/* radar detection required */
 	EEPROM_CHANNEL_WIDE = (1 << 5),		/* 20 MHz channel okay */
-	EEPROM_CHANNEL_NARROW = (1 << 6),	/* 10 MHz channel (not used) */
+	/* Bit 6 Reserved (was Narrow Channel) */
 	EEPROM_CHANNEL_DFS = (1 << 7),	/* dynamic freq selection candidate */
 };