ath9k: move ath9k_debug_sync_cause out of ath9k_hw

ath9k_hw should not depend on any ath9k data structures like ath_softc

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --cc drivers/net/wireless/ath/ath9k/ar9002_mac.c
Simple merge

diff --cc drivers/net/wireless/ath/ath9k/ar9003_mac.c
Simple merge

diff --cc drivers/net/wireless/ath/ath9k/debug.c
Simple merge

diff --cc drivers/net/wireless/ath/ath9k/debug.h
Simple merge

diff --cc drivers/net/wireless/ath/ath9k/hw-ops.h
Simple merge

diff --cc drivers/net/wireless/ath/ath9k/hw.c
Simple merge

diff --cc drivers/net/wireless/ath/ath9k/hw.h
Simple merge

diff --cc drivers/net/wireless/ath/ath9k/main.c
Simple merge