Staging: wlan-ng: fix p80211wext_mhz_to_channel for channel 14

Channel 14 is 2484 Mhz (cf p80211wext_channel_to_mhz) so this patch
corrects what seems to be just a typo.
Signed-off-by: Richard Kennedy <richard@rsk.demon.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/wlan-ng/p80211wext.c

@@ -73,7 +73,7 @@ static u8 p80211_mhz_to_channel(u16 mhz)
 	if (mhz >= 5000)
 		return (mhz - 5000) / 5;
 
-	if (mhz == 2482)
+	if (mhz == 2484)
 		return 14;
 
 	if (mhz >= 2407)