nl80211: Increase the buffer length for debug printing channels

The previously used buffer was not large enough to be able to print out
all 6 GHz channels, so use a larger buffer to avoid leaving out
supported channels from the debug print.

Signed-off-by: Jouni Malinen <quic_jouni@quicinc.com>

src/drivers/driver_nl80211_capa.c

@@ -2436,7 +2436,7 @@ static void nl80211_dump_chan_list(struct hostapd_hw_modes *modes,
 
 	for (i = 0; i < num_modes; i++) {
 		struct hostapd_hw_modes *mode = &modes[i];
-		char str[200];
+		char str[1000];
 		char *pos = str;
 		char *end = pos + sizeof(str);
 		int j, res;