ath: unshare struct ath_bus_ops between ath5k and ath9k

This struct is not used in any common code, and moving it out of
the ath header makes it easier to add more driver specific ops.
Signed-off-by: NFelix Fietkau <nbd@openwrt.org>
Tested-by: NSedat Dilek <sedat.dilek@gmail.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

drivers/net/wireless/ath/ath.h

@@ -123,14 +123,7 @@ struct ath_ops {
 };
 
 struct ath_common;
-
-struct ath_bus_ops {
-	enum ath_bus_type ath_bus_type;
-	void (*read_cachesize)(struct ath_common *common, int *csz);
-	bool (*eeprom_read)(struct ath_common *common, u32 off, u16 *data);
-	void (*bt_coex_prep)(struct ath_common *common);
-	void (*extn_synch_en)(struct ath_common *common);
-};
+struct ath_bus_ops;
 
 struct ath_common {
 	void *ah;

drivers/net/wireless/ath/ath5k/ath5k.h

@@ -1155,6 +1155,12 @@ struct ath5k_hw {
 		struct ath5k_rx_status *);
 };
 
+struct ath_bus_ops {
+	enum ath_bus_type ath_bus_type;
+	void (*read_cachesize)(struct ath_common *common, int *csz);
+	bool (*eeprom_read)(struct ath_common *common, u32 off, u16 *data);
+};
+
 /*
  * Prototypes
  */

drivers/net/wireless/ath/ath9k/hw.h

@@ -846,6 +846,14 @@ struct ath_hw {
 	u32 ent_mode;
 };
 
+struct ath_bus_ops {
+	enum ath_bus_type ath_bus_type;
+	void (*read_cachesize)(struct ath_common *common, int *csz);
+	bool (*eeprom_read)(struct ath_common *common, u32 off, u16 *data);
+	void (*bt_coex_prep)(struct ath_common *common);
+	void (*extn_synch_en)(struct ath_common *common);
+};
+
 static inline struct ath_common *ath9k_hw_common(struct ath_hw *ah)
 {
 	return &ah->common;