meta-amd: added meta-common folder

This is to keep all AMD layer common recipes at one place.

Change-Id: I5e407e9673437e203dc46d1bb4dea51387a91afd
Signed-off-by: Jayanth Othayoth <ojayanth@gmail.com>
diff --git a/meta-amd/meta-ethanolx/conf/templates/default/bblayers.conf.sample b/meta-amd/meta-ethanolx/conf/templates/default/bblayers.conf.sample
index 2703e31..31dc06d 100644
--- a/meta-amd/meta-ethanolx/conf/templates/default/bblayers.conf.sample
+++ b/meta-amd/meta-ethanolx/conf/templates/default/bblayers.conf.sample
@@ -14,4 +14,5 @@
   ##OEROOT##/meta-aspeed \
   ##OEROOT##/meta-amd \
   ##OEROOT##/meta-amd/meta-ethanolx \
+  ##OEROOT##/meta-amd/meta-common \
   "