[LSC] Add LOCAL_LICENSE_KINDS to frameworks/opt/net/ethernet

Added SPDX-license-identifier-Apache-2.0 to:
  Android.bp
  tests/Android.bp

Bug: 68860345
Bug: 151177513
Bug: 151953481

Test: m all

Exempt-From-Owner-Approval: janitorial work
Change-Id: I9e5f4513d6a737c8e31639babd7a4e6342968214
diff --git a/tests/ethernet/Android.bp b/tests/ethernet/Android.bp
index 9c776e6..4b2d270 100644
--- a/tests/ethernet/Android.bp
+++ b/tests/ethernet/Android.bp
@@ -13,6 +13,10 @@
 // limitations under the License.
 //
 
+package {
+    default_applicable_licenses: ["Android-Apache-2.0"],
+}
+
 android_test {
     name: "EthernetServiceTests",