Integrate meta-seconorth-machine/add_dma_buf

Commit: seco-ne/yocto/layers/meta-seconorth-machine@f79fbee6

fng-install: Fixed post-install for fngsystem

The post-install for fngsystem is running in a temp directory. This directory was missing the new artifacts (devicetree and overlays) to properly run. Further, the combine step of kernel + devicetree was failing for fngsystem, because the fngsystem partition is too small (at least for i.MX8 devices). To work around this, the post-install scripts checks for a "combine_kernel" file in the boot partition and only combines the kernel and the devicetree if the file is present.

Cherry-pick from 4c3847e5

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Commit: seco-ne/yocto/layers/meta-seconorth-machine@63eb17b2

kernel:config: Enabled additional dmabuf drivers/frameworks

We still have some issues with the allocation of continous memory for the VPU support. Enabled some additional drivers/frameworks in the kernel to perform further tests.