mac80211: fix chandef tracing bug

The chandef tracing writes center_freq1 twice, so
that it is always 0 (no driver supports 80+80 yet)
and leaves center_freq2 unset. Fix this mistake.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

net/mac80211/trace.h

@@ -36,7 +36,7 @@
 			__entry->control_freq = (c)->chan->center_freq;		\
 			__entry->chan_width = (c)->width;			\
 			__entry->center_freq1 = (c)->center_freq1;		\
-			__entry->center_freq1 = (c)->center_freq2;
+			__entry->center_freq2 = (c)->center_freq2;
 #define CHANDEF_PR_FMT	" control:%d MHz width:%d center: %d/%d MHz"
 #define CHANDEF_PR_ARG	__entry->control_freq, __entry->chan_width,		\
 			__entry->center_freq1, __entry->center_freq2