meta-ibm: Add Genesis3 support

This adds support for the IBM Genesis3 board.

It's an evaluation platform based on Aspeed AST2500 SoC powering
a 4 socket Intel Cascade Lake server.

The main difference to regular platforms is the non-existence of a
CPLD/FPGA.
Everything on this board is directly connected to and controlled by the
BMC including power sequence for PCH/CPU.

Change-Id: Ia040dca83fbe17c52d9aa87cbf45d90452c031ff
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Signed-off-by: Arthur Heymans <arthur.heymans@9elements.com>
Signed-off-by: Naresh Solanki <Naresh.Solanki@9elements.com>
diff --git a/meta-ibm/meta-genesis3/conf/layer.conf b/meta-ibm/meta-genesis3/conf/layer.conf
new file mode 100644
index 0000000..75ce326
--- /dev/null
+++ b/meta-ibm/meta-genesis3/conf/layer.conf
@@ -0,0 +1,9 @@
+# We have a conf and classes directory, add to BBPATH
+BBPATH .= ":${LAYERDIR}/"
+
+BBFILES += "${LAYERDIR}/recipes-*/*/*.bb \
+            ${LAYERDIR}/recipes-*/*/*.bbappend"
+
+BBFILE_COLLECTIONS += "genesis3-layer"
+BBFILE_PATTERN_genesis3-layer := "^${LAYERDIR}/"
+LAYERSERIES_COMPAT_genesis3-layer = "langdale mickledore"