qcacld-3.0: Add HIF callback API to get BW level

Expose API in HDD, so HIF can callback to get the current bandwidth
level.

Change-Id: If65533a99e5d30ab66c4be20c8eb13b1bd1f033b
CRs-Fixed: 2618015

core/hdd/src/wlan_hdd_driver_ops.c

@@ -74,6 +74,19 @@ static inline void hdd_remove_pm_qos(struct device *dev)
 	pld_remove_pm_qos(dev);
 }
 
+/**
+ * hdd_get_bandwidth_level() - get current bandwidth level
+ * @data: Context
+ *
+ * Return: current bandwidth level
+ */
+static int hdd_get_bandwidth_level(void *data)
+{
+	struct hdd_context *hdd_ctx = cds_get_context(QDF_MODULE_ID_HDD);
+
+	return hdd_get_current_throughput_level(hdd_ctx);
+}
+
 /**
  * hdd_set_recovery_in_progress() - API to set recovery in progress
  * @data: Context
@@ -150,6 +163,7 @@ static void hdd_hif_init_driver_state_callbacks(void *data,
 	cbk->is_load_unload_in_progress = hdd_is_load_or_unload_in_progress;
 	cbk->is_driver_unloading = hdd_is_driver_unloading;
 	cbk->is_target_ready = hdd_is_target_ready;
+	cbk->get_bandwidth_level = hdd_get_bandwidth_level;
 }
 
 #ifdef FORCE_WAKE
@@ -161,6 +175,7 @@ void hdd_set_hif_init_phase(struct hif_opaque_softc *hif_ctx,
 #endif /* FORCE_WAKE */
 
 /**
+
  * hdd_hif_set_attribute() - API to set CE attribute if memory is limited
  * @hif_ctx: hif context
  *