add eol to message issued by gps_write

MultiCAN/src/gps/writer.c

@@ -109,7 +109,7 @@ sci_Return gps_write(
             sci_err(SCI_ERRCODE(ret), "sci_write (port=%d, cob=%#x)", port, cob);
          }
          if (ret & SCI_WAIT) {
-            printf("sci_write (port=%d, cob=%#x) returned SCI_WAIT flag",
+            printf("sci_write (port=%d, cob=%#x) returned SCI_WAIT flag\n",
                port, cob);
          }
       }