Integrate meta-seconorth-distro/fngsystem-size

Commit: seco-ne/yocto/layers/meta-seconorth-distro@cd92a8fd

fngsystem: Increase allowed ramfs size

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Commit: seco-ne/yocto/layers/meta-seconorth-distro@8cf4dc04

fng-install: Allow to use -postfixes in the machine name, know matched correctly

For example seco-mx8mm-test was not match to the mx8mm defaults, which lead to an error message during installation.