ath9k & ath9k_htc: move ath_rx_stats to cmn

and use it. This move need changes in both drivers.

Signed-off-by: Oleksij Rempel <linux@rempel-privat.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

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

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

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

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