qcacmn: Export the bus type

Currently only ol_target_failure needs to query the bus type,
but when usb and sdio busses are added there will be more
external checks based on the bus type.

Change-Id: I48172a918e75ff3a6e56fae5c311ae999efa607e
CRs-Fixed: 986480

hif/inc/hif.h

@@ -491,6 +491,7 @@ void hif_lro_flush_cb_register(struct hif_opaque_softc *scn,
 			       void (handler)(void *), void *data);
 void hif_lro_flush_cb_deregister(struct hif_opaque_softc *scn);
 bool hif_needs_bmi(struct hif_opaque_softc *scn);
+enum qdf_bus_type hif_get_bus_type(struct hif_opaque_softc *hif_hdl);
 struct hif_target_info *hif_get_target_info_handle(struct hif_opaque_softc *
 						   scn);
 struct hif_config_info *hif_get_ini_handle(struct hif_opaque_softc *scn);

hif/src/hif_main.c

@@ -803,6 +803,17 @@ bool hif_needs_bmi(struct hif_opaque_softc *hif_ctx)
 	return hif_sc->bus_type != QDF_BUS_TYPE_SNOC;
 }
 
+/**
+ * hif_get_bus_type() - return the bus type
+ *
+ * Return: enum qdf_bus_type
+ */
+enum qdf_bus_type hif_get_bus_type(struct hif_opaque_softc *hif_hdl)
+{
+	struct hif_softc *scn = HIF_GET_SOFTC(hif_hdl);
+	return scn->bus_type;
+}
+
 /**
  * Target info and ini parameters are global to the driver
  * Hence these structures are exposed to all the modules in