[systemd, linux]: Relicense patches to be compatible to upstream project

Apache-2.0 licensed patches can't be applied to (L)GPL 2.x code
without legal issues.
These patches should have been under the same license as the
upstream project in the first place.

Thanks to shoragan for spotting this.

Signed-off-by: Bernhard Rosenkränzer <bernhard.rosenkraenzer.ext@huawei.com>

meta-oniro-core/recipes-kernel/linux/linux/fix-gcc-plugins-with-gcc-11.patch.license

 # SPDX-FileCopyrightText: Huawei Inc.
 #
-# SPDX-License-Identifier: Apache-2.0
+# SPDX-License-Identifier: GPL-2.0-only