AST2500: Add AST2500 evaluation board layer

The AST2500 is an ARM SOC made by Aspeed.

This layer is a stub; there are a couple missing bits of support
from the kernel and u-boot.

Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/meta-openbmc-machines/meta-evb/meta-evb-aspeed/meta-evb-ast2500/conf/bblayers.conf.sample b/meta-openbmc-machines/meta-evb/meta-evb-aspeed/meta-evb-ast2500/conf/bblayers.conf.sample
new file mode 100644
index 0000000..dee1fa1
--- /dev/null
+++ b/meta-openbmc-machines/meta-evb/meta-evb-aspeed/meta-evb-ast2500/conf/bblayers.conf.sample
@@ -0,0 +1,27 @@
+# LAYER_CONF_VERSION is increased each time build/conf/bblayers.conf
+# changes incompatibly
+LCONF_VERSION = "6"
+
+BBPATH = "${TOPDIR}"
+BBFILES ?= ""
+
+BBLAYERS ?= " \
+  ##OEROOT##/meta \
+  ##OEROOT##/meta-yocto \
+  ##OEROOT##/meta-phosphor \
+  ##OEROOT##/meta-openbmc-bsp/meta-aspeed \
+  ##OEROOT##/meta-openbmc-bsp/meta-aspeed/meta-ast2500 \
+  ##OEROOT##/meta-openbmc-machines/meta-evb \
+  ##OEROOT##/meta-openbmc-machines/meta-evb/meta-evb-aspeed \
+  ##OEROOT##/meta-openbmc-machines/meta-evb/meta-evb-aspeed/meta-evb-ast2500 \
+  "
+BBLAYERS_NON_REMOVABLE ?= " \
+  ##OEROOT##/meta \
+  ##OEROOT##/meta-yocto \
+  ##OEROOT##/meta-phosphor \
+  ##OEROOT##/meta-openbmc-bsp/meta-aspeed \
+  ##OEROOT##/meta-openbmc-bsp/meta-aspeed/meta-ast2500 \
+  ##OEROOT##/meta-openbmc-machines/meta-evb \
+  ##OEROOT##/meta-openbmc-machines/meta-evb/meta-evb-aspeed \
+  ##OEROOT##/meta-openbmc-machines/meta-evb/meta-evb-aspeed/meta-evb-ast2500 \
+  "