meta-x86: layer.conf: Add warrior compatibility

oe-core branched in preparation for the upcoming 2.7 Yocto release and
as of 13e45ff requires core layer compatibility to "warrior" instead of
"thud".  We'll retain compatibility for both until we do our own branch
or stop testing thud.

(From meta-x86 rev: 77adcebb51005a94029e01a902e9639ac3c02d57)

Signed-off-by: Patrick Venture <venture@google.com>
Change-Id: Ife3da4b59a5ccc09f2e93657cf375c326b3b4080
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/meta-x86/conf/layer.conf b/meta-x86/conf/layer.conf
index 9ac01c8..5812d50 100644
--- a/meta-x86/conf/layer.conf
+++ b/meta-x86/conf/layer.conf
@@ -3,4 +3,4 @@
 
 BBFILE_COLLECTIONS += "obmc_machines_x86"
 BBFILE_PATTERN_obmc_machines_x86 = ""
-LAYERSERIES_COMPAT_obmc_machines_x86 = "thud"
+LAYERSERIES_COMPAT_obmc_machines_x86 = "thud warrior"