webos-image: Update layer pins for 2013-05-08

meta-webos-backports as of 2013-05-08 13:31:34 -0700

254c525 wpa-supplicant: Import version 2.0 from upstream oe-core

meta-webos as of 2013-05-08 14:21:40 -0700

2c6b245 webos-image: Add VIRTUAL-RUNTIME_webos-compositor

Open-webOS-DCO-1.0-Signed-off-by: Susan Montooth <susan.montooth@lge.com>