wifi: rtw89: Refine active scan behavior in 6 GHz

The interval between sending each probe request is regulated. Before
this patch, some packets are not sent out properly because of our HW
limit. Extend the 6 GHz channel dwell time to cope with this.
Signed-off-by: Po-Hao Huang <phhuang@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20231129070046.18443-3-pkshih@realtek.com

drivers/net/wireless/realtek/rtw89/fw.c

@@ -3867,6 +3867,8 @@ static void rtw89_hw_scan_add_chan(struct rtw89_dev *rtwdev, int chan_type,
 			if (info->channel_6ghz &&
 			    ch_info->pri_ch != info->channel_6ghz)
 				continue;
+			else if (info->channel_6ghz && probe_count != 0)
+				ch_info->period += RTW89_CHANNEL_TIME_6G;
 			ch_info->pkt_id[probe_count++] = info->id;
 			if (probe_count >= RTW89_SCANOFLD_MAX_SSID)
 				break;