treewide: add scarthgap to LAYERSERIES_COMPAT

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: I28ee50fa55ae47dd7fd8c99f8f6db8f5f6dfa53d
diff --git a/meta-ampere/conf/layer.conf b/meta-ampere/conf/layer.conf
index e21a9d8..6c7be32 100644
--- a/meta-ampere/conf/layer.conf
+++ b/meta-ampere/conf/layer.conf
@@ -7,4 +7,4 @@
 
 BBFILE_COLLECTIONS += "ampere-layer"
 BBFILE_PATTERN_ampere-layer := "^${LAYERDIR}/"
-LAYERSERIES_COMPAT_ampere-layer = "mickledore nanbield"
+LAYERSERIES_COMPAT_ampere-layer = "nanbield scarthgap"