Integrate meta-seconorth-machine/mx8_cleanup

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Commit: seco-ne/yocto/layers/meta-seconorth-machine@df176aae

machine:tanaro: Added RTC overlays

In the future, the TANARO will be produced with two possible
RTC variants. Both variants are present in the main devicetree
but are disabled by default. During the installation, one of
the RTCs will be activated via one of the two devicetree overlays.

BCS 746-000877

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Commit: seco-ne/yocto/layers/meta-seconorth-machine@49cec441

machine: Clean-up of i.MX8MM machine

Also small changes to the Kernel include file.

default.xml

@@ -20,7 +20,7 @@
     <project name="meta-qt5.git"                    revision="10f3673fd4b6c6e1e61c23478802f83652475a5f"  remote="qt5-github"   path="sources/meta-qt5"                  />
     <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="993f087a924f2a41d04ffb2f93c09b5c38280e64"  remote="seco-ne"      path="sources/meta-seconorth-machine"    />
+    <project name="layers/meta-seconorth-machine"   revision="df176aaef0f5eb459ea995bafb19a79a895b6a97"  remote="seco-ne"      path="sources/meta-seconorth-machine"    />
     <project name="layers/meta-seconorth-distro"    revision="38c8f73c9756c9bee5e80a758800acdc27ab1d8e"  remote="seco-ne"      path="sources/meta-seconorth-distro"     />
     <project name="layers/meta-seconorth-nogplv3"   revision="f8e88dab5e6fc14b656290e99f9bf9e32351d100"  remote="seco-ne"      path="sources/meta-seconorth-nogplv3"    />
     <project name="config"                          revision="7d7456e67863091c8daf680b7549eedab087b20a"  remote="seco-ne"      path=".conf"                              >