aspeed: Add Aspeed G6/eval configuration

Add base configuration metadata for the Aspeed AST2600 and its
evaluation board.

Initially point at the Aspeed SDK until kernel and u-boot support is
added upstream.

Change-Id: I13b6b64ccc011fb5ab2d68ed5a383a81811d65b0
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/conf/machine/evb-ast2600.conf b/conf/machine/evb-ast2600.conf
new file mode 100644
index 0000000..fd72baa
--- /dev/null
+++ b/conf/machine/evb-ast2600.conf
@@ -0,0 +1,4 @@
+KERNEL_DEVICETREE = "aspeed-ast2600-evb.dtb"
+UBOOT_MACHINE = "evb-ast2600_defconfig"
+
+require conf/machine/include/ast2600.inc