fixes for vgc add device config and IsNniPort func

Change-Id: Id7002792a5a811ebaca630bde5dadadc10dff048
diff --git a/internal/pkg/util/utils.go b/internal/pkg/util/utils.go
index 0711053..313a8ff 100644
--- a/internal/pkg/util/utils.go
+++ b/internal/pkg/util/utils.go
@@ -11,7 +11,7 @@
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
-*/
+ */
 
 package util
 
@@ -89,7 +89,7 @@
 
 // IsNniPort is to check if given port is Nni Port.
 func IsNniPort(id uint32) bool {
-	return (id >= 0x100000)
+	return (id >= 0x1000000)
 }
 
 // Uint32ToByte to convert uint32 to byte