ath9k: reorder or remove some includes

to fix compile errors

Signed-off-by: Oleksij Rempel <linux@rempel-privat.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ath/ath9k/ath9k.h b/drivers/net/wireless/ath/ath9k/ath9k.h
index 33a2ae7..20dd344 100644
--- a/drivers/net/wireless/ath/ath9k/ath9k.h
+++ b/drivers/net/wireless/ath/ath9k/ath9k.h
@@ -23,8 +23,8 @@
 #include <linux/leds.h>
 #include <linux/completion.h>
 
-#include "debug.h"
 #include "common.h"
+#include "debug.h"
 #include "mci.h"
 #include "dfs.h"
 #include "spectral.h"