mac80211: minstrel: fix CCK rate group streams value

Fixes a harmless underflow issue when CCK rates are actively being used
Signed-off-by: NFelix Fietkau <nbd@nbd.name>
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

net/mac80211/rc80211_minstrel_ht.c

@@ -131,7 +131,7 @@
 
 #define CCK_GROUP(_s)					\
 	[MINSTREL_CCK_GROUP] = {			\
-		.streams = 0,				\
+		.streams = 1,				\
 		.flags = 0,				\
 		.shift = _s,				\
 		.duration = {				\