qcacld-3.0: Replace sys_log() with pe_* log levels in mac_init_api.c

Replace sys_log() with pe_* appropriate log levels in mac_init_api.c.

Change-Id: Ic978665fbf99dc395bbaaa168e0db4a14c9e3697
CRs-Fixed: 2020798

core/mac/src/sys/legacy/src/system/src/mac_init_api.c

@@ -163,7 +163,7 @@ tSirRetStatus mac_open(struct wlan_objmgr_psoc *psoc, tHalHandle *pHalHandle,
 
 	status =  pe_open(p_mac, cds_cfg);
 	if (eSIR_SUCCESS != status) {
-		sys_log(p_mac, LOGE, FL("mac_open failure\n"));
+		pe_err("pe_open() failure");
 		qdf_mem_free(p_mac);
 	}