Integrate config/kirkstone-pull-from-dunfell-branch

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Commit: config@d3eac486

LICENSE: Add Apache 2.0 license file

According to our company licensing policy for software the Yocto layers
should be licensed under the Apache 2.0 license.
Adapt the LICENSE-2.0.txt file from https://www.apache.org/licenses/LICENSE-2.0.txt
as described in the APPENDIX.

Add the license as LICENSE.txt file to the layer repository.

BCS 746-000657

(cherry picked from commit 21df2bf31565551a8d9a2827ed1ae2530f5d6fa1)

default.xml

@@ -24,7 +24,7 @@
     <project name="layers/meta-seconorth-machine"   revision="3c880db4e2f6741ee008feb0d1654963f8ededcd"  remote="seco-ne"      path="sources/meta-seconorth-machine"    />
     <project name="layers/meta-seconorth-distro"    revision="8311c0f10f51cb9e6f504220bd11deadedea2192"  remote="seco-ne"      path="sources/meta-seconorth-distro"     />
     <project name="layers/meta-seconorth-nogplv3"   revision="546c2e50c656581655b538a3e08c797d9bd8eaca"  remote="seco-ne"      path="sources/meta-seconorth-nogplv3"    />
-    <project name="config"                          revision="1cc9dc24e9525b9a168e78836a6da67397d91310"  remote="seco-ne"      path=".conf"                              >
+    <project name="config"                          revision="d3eac4869dd26cdbcc50557c209b858330296505"  remote="seco-ne"      path=".conf"                              >
         <linkfile dest="setup-environment" src="setup-environment" />
     </project>