iwlwifi: fix typo in IWL_CCK_RATES_MASK

Due to a typo, the variable contains OFDM
rates as well. The only user doesn't care,
so this change doesn't really do anything
but fix up my confusion.
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

drivers/net/wireless/iwlwifi/iwl-agn-rs.h

@@ -191,7 +191,7 @@ enum {
 	IWL_RATE_2M_MASK)
 
 #define IWL_CCK_RATES_MASK          \
-       (IWL_BASIC_RATES_MASK      | \
+       (IWL_CCK_BASIC_RATES_MASK  | \
 	IWL_RATE_5M_MASK          | \
 	IWL_RATE_11M_MASK)