Moves prefabs out of LFS so yamlmerge can do merges

Author: omundy

.gitattributes

@@ -5,7 +5,7 @@
 *.tga filter=lfs diff=lfs merge=lfs -text
 *.mp3 filter=lfs diff=lfs merge=lfs -text
 *.wav filter=lfs diff=lfs merge=lfs -text
-*.prefab filter=lfs diff=lfs merge=lfs -text
+*.prefab merge=unityyamlmerge eol=lf
 *.fbx filter=lfs diff=lfs merge=lfs -text
 *.xcf filter=lfs diff=lfs merge=lfs -text
 *.app filter=lfs diff=lfs merge=lfs -text