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/include/aspeed.inc b/conf/machine/include/aspeed.inc
index 36153cf..e62af13 100644
--- a/conf/machine/include/aspeed.inc
+++ b/conf/machine/include/aspeed.inc
@@ -3,4 +3,9 @@
 PREFERRED_PROVIDER_u-boot ?= "u-boot-aspeed"
 PREFERRED_PROVIDER_u-boot-fw-utils ?= "u-boot-fw-utils-aspeed"
 
+PREFERRED_PROVIDER_virtual/kernel_aspeed-g6 ?= "linux-aspeed-sdk"
+PREFERRED_PROVIDER_virtual/bootloader_aspeed-g6 ?= "u-boot-aspeed-sdk"
+PREFERRED_PROVIDER_u-boot_aspeed-g6 ?= "u-boot-aspeed-sdk"
+PREFERRED_PROVIDER_u-boot-fw-utils_aspeed-g6 ?= "u-boot-fw-utils-aspeed-sdk"
+
 MACHINEOVERRIDES =. "aspeed:"