Also make ebpf_common.h licensed under GPL-2.0-only or Apache-2.0

Signed-off-by: Andy Fingerhut <[email protected]>

backends/ebpf/runtime/ebpf_common.h

@@ -1,17 +1,15 @@
 /*
 Copyright 2018 VMware, Inc.
+SPDX-License-Identifier: (GPL-2.0-only or Apache-2.0)
 
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
+This file is dual-license, so that when it is included from a source
+file intended to be compiled and loaded into the Linux kernel, it can
+be included from a file licensed under GPL-2.0-only.
 
-    http://www.apache.org/licenses/LICENSE-2.0
+When it is included from a source file intended to be compiled and run
+as a user space program, it can be included from a file licensed as
+Apache-2.0.
 
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-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.
 */
 
 /*

backends/ebpf/runtime/ebpf_kernel.h

@@ -9,7 +9,6 @@ be included from a file licensed under GPL-2.0-only.
 When it is included from a source file intended to be compiled and run
 as a user space program, it can be included from a file licensed as
 Apache-2.0.
-
 */