ath9k-common: create common-debug and move modal_eeprom to cmn

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/Makefile
Simple merge

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/common.h
Simple merge

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