qcacmn: Implement interface to set WLM level

WLAN Latency module (WLM) is added by fw to gain latency
because of schedule out of service like power saving,
scanning, roaming etc. per the level set by framework.

Change-Id: I6b8775e5f492b6f287d60d39610a544114185a23
CRs-Fixed: 2152290
diff --git a/wmi_unified_api.h b/wmi_unified_api.h
index 896821e..a378481 100644
--- a/wmi_unified_api.h
+++ b/wmi_unified_api.h
@@ -743,6 +743,16 @@
 
 QDF_STATUS wmi_unified_nat_keepalive_en_cmd(void *wmi_hdl, uint8_t vdev_id);
 
+/**
+ * wmi_unified_set_latency_config_cmd()
+ * @wmi_handle: wmi handle
+ * @param: WLM parameters
+ *
+ * Return: QDF_STATUS_SUCCESS on success and QDF_STATUS_E_FAILURE for failure
+ */
+QDF_STATUS wmi_unified_wlm_latency_level_cmd(void *wmi_hdl,
+					struct wlm_latency_level_param *param);
+
 QDF_STATUS wmi_unified_csa_offload_enable(void *wmi_hdl, uint8_t vdev_id);
 
 #ifdef WLAN_FEATURE_CIF_CFR