ath10k: change wmi.h to include only ieee80211.h

wmi.h does not use anything from mac80211.h so change it to include only
ieee80211.h.
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

drivers/net/wireless/ath/ath10k/wmi.h

@@ -20,7 +20,7 @@
 #define _WMI_H_
 
 #include <linux/types.h>
-#include <net/mac80211.h>
+#include <linux/ieee80211.h>
 
 /*
  * This file specifies the WMI interface for the Unified Software