ath6kl: use braces on both arms of if statement

Fixes checkpatch warning:

CHECK: braces {} should be used on all arms of this statement

Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

diff --cc drivers/net/wireless/ath/ath6kl/cfg80211.c
Simple merge

diff --cc drivers/net/wireless/ath/ath6kl/htc_mbox.c
Simple merge

diff --cc drivers/net/wireless/ath/ath6kl/main.c
Simple merge

diff --cc drivers/net/wireless/ath/ath6kl/sdio.c
Simple merge

diff --cc drivers/net/wireless/ath/ath6kl/txrx.c
Simple merge

diff --cc drivers/net/wireless/ath/ath6kl/wmi.c
Simple merge