Integrate meta-seconorth-machine/add_dma_buf

--

Commit: seco-ne/yocto/layers/meta-seconorth-machine@c231f99e

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

--

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.

default.xml

@@ -21,7 +21,7 @@
     <project name="meta-qt5.git"                    revision="5b71df60e523423b9df6793de9387f87a149ac42"  remote="qt5-github"   path="sources/meta-qt5"                  />
     <project name="meta-freescale.git"              revision="2fb1ce365338126aad365012ebb913b3e4a9f1be"  remote="fslc"         path="sources/meta-freescale"            />
     <project name="meta-freescale-distro.git"       revision="fc15f5003043da23212596be7366ae2547c308ad"  remote="fslc"         path="sources/meta-freescale-distro"     />
-    <project name="layers/meta-seconorth-machine"   revision="222ea99db9933e5bcfd3327e92d6a9676be8b389"  remote="seco-ne"      path="sources/meta-seconorth-machine"    />
+    <project name="layers/meta-seconorth-machine"   revision="c231f99eab00441407d1ae1106b4c79f3c5c4a1c"  remote="seco-ne"      path="sources/meta-seconorth-machine"    />
     <project name="layers/meta-seconorth-distro"    revision="1c8d1ebb45936d35d64d696cfd118f623fd9ba6c"  remote="seco-ne"      path="sources/meta-seconorth-distro"     />
     <project name="layers/meta-seconorth-nogplv3"   revision="9ba8e4a89e3e0639c81a946a18294c66b161ad52"  remote="seco-ne"      path="sources/meta-seconorth-nogplv3"    />
     <project name="config"                          revision="39ac7a10e545d364d1f3bbf0db6920b99f0bf44a"  remote="seco-ne"      path=".conf"                              >