ath: Add support for tracing

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/Kconfig
Simple merge

diff --cc drivers/net/wireless/ath/Makefile
Simple merge

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

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

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

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