ath6kl: Fix inconsistent indenting

Eliminate the follow smatch warning:

drivers/net/wireless/ath/ath6kl/cfg80211.c:3308
ath6kl_cfg80211_sscan_start() warn: inconsistent indenting.

Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/1622026376-68524-1-git-send-email-jiapeng.chong@linux.alibaba.com