layer.conf: avoid unnecessary early expansion with :=

bitbake handles immediate expansions of LAYERDIR for us automatically.

Signed-off-by: Christopher Larson <chris_larson@mentor.com>
readme: remove inaccessible link

Signed-off-by: Kevin Strasser <kevin.strasser@linux.intel.com>
update for danny release

changes include:
	-sync media-ctl with meta-oe
	-sync v4l-utils with meta-oe
	-drop platform specific codecs
	-update bbappends for new versions

Signed-off-by: Kevin Strasser <kevin.strasser@linux.intel.com>