ath9k: Cleanup spectral scan code

* Move definitions to spectral.h
* Move processing/debug code to spectral.c

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
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/ath9k.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/recv.c
Simple merge

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

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