Fix layer dependency on meta-oe

Fix layer dependency on meta-oe:
- layer name is "swupdate", not "swupdate-layer" (see BBFILE_COLLECTIONS);
- meta-oe layer name is "openembedded-layer", not "oe";
- remove comment about LUA, also libconfig is from meta-oe.

Signed-off-by: Diego Rondini <diego.rondini@kynetics.com>

conf/layer.conf

@@ -9,5 +9,4 @@ BBFILE_COLLECTIONS += "swupdate"
 BBFILE_PATTERN_swupdate := "^${LAYERDIR}/"
 BBFILE_PRIORITY_swupdate = "6"
 
-# LUA is retrieved from meta-oe
-LAYERDEPENDS_swupdate-layer = "oe"
+LAYERDEPENDS_swupdate = "openembedded-layer"