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/templates/default/bblayers.conf.sample b/meta-ibm/meta-genesis3/conf/templates/default/bblayers.conf.sample
new file mode 100644
index 0000000..09e39a9
--- /dev/null
+++ b/meta-ibm/meta-genesis3/conf/templates/default/bblayers.conf.sample
@@ -0,0 +1,17 @@
+# LAYER_CONF_VERSION is increased each time build/conf/bblayers.conf
+# changes incompatibly
+LCONF_VERSION = "8"
+
+BBPATH = "${TOPDIR}"
+BBFILES ?= ""
+
+BBLAYERS ?= " \
+  ##OEROOT##/meta \
+  ##OEROOT##/meta-poky \
+  ##OEROOT##/meta-openembedded/meta-oe \
+  ##OEROOT##/meta-openembedded/meta-networking \
+  ##OEROOT##/meta-openembedded/meta-python \
+  ##OEROOT##/meta-phosphor \
+  ##OEROOT##/meta-aspeed \
+  ##OEROOT##/meta-ibm/meta-genesis3 \
+  "