meta-ieiesystems: nf5280m7: Add new machine layer

the IEISystmes NF5280M7 is an x86 platform server with an
AST2600-based BMC.

Tested: Built nf5280m7 and verified the image-bmc is generated.

Signed-off-by: George Liu <liuxiwei@ieisystem.com>
Change-Id: Id7de0a95757cfab3f4cf4c9b7f35cebfbc341e99
diff --git a/meta-ieisystems/meta-nf5280m7/recipes-kernel/linux/linux-aspeed_%.bbappend b/meta-ieisystems/meta-nf5280m7/recipes-kernel/linux/linux-aspeed_%.bbappend
new file mode 100644
index 0000000..6a0c702
--- /dev/null
+++ b/meta-ieisystems/meta-nf5280m7/recipes-kernel/linux/linux-aspeed_%.bbappend
@@ -0,0 +1,5 @@
+FILESEXTRAPATHS:prepend := "${THISDIR}/${PN}:"
+
+SRC_URI:append: = " \
+    file://nf5280m7.cfg \
+"