webos-image: Update layer pins for 2014-04-28

meta-webos as of 2014-04-28 09:36:40 -0700

e6874b5 webos-image: smartkey-hun=16

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

Change-Id: I7522f5dabc26a2d30de71937c1ec39513fc97cfc
Reviewed-on: https://g2g.palm.com/5475
Reviewed-by: DCO Verification
Build: Susan Montooth <susan.montooth@lge.com>
Reviewed-by: Build Verification
Reviewed-by: Susan Montooth <susan.montooth@lge.com>
Tested-by: Susan Montooth <susan.montooth@lge.com>