Merge pull request #326 from YoeDistro/yoe/mut

layer.conf: add hardknott to compatible release branches

conf/layer.conf

@@ -9,7 +9,7 @@ BBFILE_PATTERN_rust-layer := "^${LAYERDIR}/"
 BBFILE_PRIORITY_rust-layer = "7"
 
 LAYERDEPENDS_rust-layer = "core openembedded-layer"
-LAYERSERIES_COMPAT_rust-layer = "rocko sumo thud warrior zeus dunfell gatesgarth"
+LAYERSERIES_COMPAT_rust-layer = "rocko sumo thud warrior zeus dunfell gatesgarth hardknott"
 
 # Override security flags
 require conf/distro/include/rust_security_flags.inc