ath6kl: move remaining content from htc_hif.h to hif.h

Now htc_hif.h can be removed.

Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
diff --git a/drivers/net/wireless/ath/ath6kl/sdio.c b/drivers/net/wireless/ath/ath6kl/sdio.c
index 5b1df82..2394c17 100644
--- a/drivers/net/wireless/ath/ath6kl/sdio.c
+++ b/drivers/net/wireless/ath/ath6kl/sdio.c
@@ -21,7 +21,7 @@
 #include <linux/mmc/sdio_ids.h>
 #include <linux/mmc/sdio.h>
 #include <linux/mmc/sd.h>
-#include "htc_hif.h"
+#include "hif.h"
 #include "hif-ops.h"
 #include "target.h"
 #include "debug.h"