Integrate meta-seconorth-distro/remove-networkd-for-gplv3-variants-only

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Commit: seco-ne/yocto/layers/meta-seconorth-distro@91b1c14e

systemd: Remove networkd depending on gplv3 in DISTRO_FEATURE, configure MAC Address

Normally we would use network-manager, but for the gplv3 free variants
it is not available. In these cases we keep systemd-networkd as
network tools available.
Also adapt the call to gf-network-conf in the postinsts step during the
first boot to automatically determine the used network tooling.
This way the configuration for systemd-networkd is generated from the
xml setting as needed.

Until now the MACAdress was not configured if systemd-networkd was used.
Now the MACAddress is added to the newwork config file like it is done
when network-manager is used.

default.xml

@@ -21,7 +21,7 @@
     <project name="meta-freescale.git"              revision="5a026be5a6b29a27a7754d7fa5d4765c99f98ed9"  remote="fslc"         path="sources/meta-freescale"            />
     <project name="meta-freescale-distro.git"       revision="5d882cdf079b3bde0bd9869ce3ca3db411acbf3b"  remote="fslc"         path="sources/meta-freescale-distro"     />
     <project name="layers/meta-seconorth-machine"   revision="4bf6746db6f04702f190840b24f152c703bc162e"  remote="seco-ne"      path="sources/meta-seconorth-machine"    />
-    <project name="layers/meta-seconorth-distro"    revision="510cc1933f49038f36fc19e3b58822312e44ea76"  remote="seco-ne"      path="sources/meta-seconorth-distro"     />
+    <project name="layers/meta-seconorth-distro"    revision="91b1c14e0fca97352ec7e1fb4b42c0baf9cfaa51"  remote="seco-ne"      path="sources/meta-seconorth-distro"     />
     <project name="layers/meta-seconorth-nogplv3"   revision="a81215cb3335d0046e79f8593a108f297748cab6"  remote="seco-ne"      path="sources/meta-seconorth-nogplv3"    />
     <project name="config"                          revision="c3bae3435c3c8c1f184a17df9cc8eb562da44c5a"  remote="seco-ne"      path=".conf"                              >
         <linkfile dest="setup-environment" src="setup-environment" />