[LICENSE] Add SPDX Identifier

utils/examples/drc-mag.sh

diff --git a/utils/examples/drc-mag.sh b/utils/examples/drc-mag.sh
index 8fbc697..ca6eb21 100644
--- a/utils/examples/drc-mag.sh
+++ b/utils/examples/drc-mag.sh
@@ -12,6 +12,7 @@
 # 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.
+# SPDX-License-Identifier: Apache-2.0
 
 
 export MAGTYPE=mag ;