Integrate meta-seconorth-machine/mxboot_update_to_fngboot_v16

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Commit: seco-ne/yocto/layers/meta-seconorth-machine@350d5ff4

fngboot/mx6boot: update to FnG-Boot v16 release with U-Boot support

This patch updates Yocto recipes to include FnG-Boot v16.0 release,
which officially adds support for U-Boot as 2nd stage loader.

default.xml

@@ -28,7 +28,7 @@
     <project name="meta-mediatek-bsp.git"           revision="048e2981c96b0e93896d540c53b789f8c93c7e6e"  remote="rity"         path="sources/meta-mediatek-bsp"         />
     <project name="meta-rity.git"                   revision="bc2393cf3c26a3db6da719a5e05d517c6fe01e6c"  remote="rity"         path="sources/meta-rity"                 />
     <project name="meta-rauc.git"                   revision="804386f04826ea7fe74a1b4e0a20991425c06d9c"  remote="rauc"         path="sources/meta-rauc"                 />
-    <project name="layers/meta-seconorth-machine"   revision="cfb2546e955b68fedc758a992319de5e6bda774c"  remote="seco-ne"      path="sources/meta-seconorth-machine"    />
+    <project name="layers/meta-seconorth-machine"   revision="350d5ff4b281366386b04b54454de688b8f4929e"  remote="seco-ne"      path="sources/meta-seconorth-machine"    />
     <project name="layers/meta-seconorth-mtk"       revision="f4c479d81d1aa21a65b3ab7d42484ae510c890a8"  remote="seco-ne"      path="sources/meta-seconorth-mtk"        />
     <project name="layers/meta-seconorth-distro"    revision="d9e97ceba0bb7f1e6eef839c4b2c1ec599d30112"  remote="seco-ne"      path="sources/meta-seconorth-distro"     />
     <project name="layers/meta-seconorth-nogplv3"   revision="2a0119b2a4cef6a1471c69b495ca1cdf60155949"  remote="seco-ne"      path="sources/meta-seconorth-nogplv3"    />