meta-evb-aspeed: add symlinks for machine-conf for setup

The 'setup' script looks for machine config files being present
to know that the meta-layer contains a valid machine for OpenBMC.
The aspeed EVBs are split between meta-aspeed for the base support
and meta-evb-aspeed for "EVB on Phosphor" support.

Add symlinks for the machine config files from meta-aspeed into
meta-evb-aspeed so that setup recognizes them as valid machines, but
using the phosphor layers.

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: I673756a3d837f61d7338b8fbb356c5234770ffca
diff --git a/meta-evb/meta-evb-aspeed/meta-evb-ast2500/conf/machine/evb-ast2500.conf b/meta-evb/meta-evb-aspeed/meta-evb-ast2500/conf/machine/evb-ast2500.conf
new file mode 120000
index 0000000..be96d73
--- /dev/null
+++ b/meta-evb/meta-evb-aspeed/meta-evb-ast2500/conf/machine/evb-ast2500.conf
@@ -0,0 +1 @@
+../../../../../meta-aspeed/conf/machine/evb-ast2500.conf
\ No newline at end of file
diff --git a/meta-evb/meta-evb-aspeed/meta-evb-ast2600/conf/machine/evb-ast2600.conf b/meta-evb/meta-evb-aspeed/meta-evb-ast2600/conf/machine/evb-ast2600.conf
new file mode 120000
index 0000000..2f70684
--- /dev/null
+++ b/meta-evb/meta-evb-aspeed/meta-evb-ast2600/conf/machine/evb-ast2600.conf
@@ -0,0 +1 @@
+../../../../../meta-aspeed/conf/machine/evb-ast2600.conf
\ No newline at end of file