wcn36xx: clean up some inconsistent indenting

Eliminate the follow smatch warnings:
drivers/net/wireless/ath/wcn36xx/main.c:1394 wcn36xx_get_survey() warn:
inconsistent indenting
drivers/net/wireless/ath/wcn36xx/txrx.c:379 wcn36xx_rx_skb() warn:
inconsistent indenting

Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Yang Li <yang.lee@linux.alibaba.com>
Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>
Link: https://lore.kernel.org/r/20220201041548.18464-1-yang.lee@linux.alibaba.com