qcacld-3.0: Initialize local struct objects

Initialize struct cm_roam_values_copy to avoid using uninitialized
parameters in wlan_cm_roam_cfg_set_value().
Initialize struct pdev_params to zero to avoid using uninitialized
parameters in wmi_unified_pdev_param_send().

Change-Id: I820db09840431487f1756695a0562f8a794f549f
CRs-Fixed: 3187194

components/umac/mlme/connection_mgr/dispatcher/src/wlan_cm_roam_api.c

@@ -2080,7 +2080,7 @@ QDF_STATUS wlan_cm_set_roam_band_bitmask(struct wlan_objmgr_psoc *psoc,
 					 uint8_t vdev_id,
 					 uint32_t roam_band_bitmask)
 {
-	struct cm_roam_values_copy src_config;
+	struct cm_roam_values_copy src_config = {};
 
 	src_config.uint_value = roam_band_bitmask;
 	return wlan_cm_roam_cfg_set_value(psoc, vdev_id, ROAM_BAND,