omap4-common: Include specialized copy of libskia for playback of Saved Webpages.

This CL gives prime devices the ability to display saved pages in the
Android browser that were recorded with a previous version of Skia.

bug: 8019756
Change-Id: I0fb1dbf88abb3aeaac2b7c9e456c4f25722eb8f5
omap4-common: Disable scissor optimization

Reference: http://source.android.com/devices/tuning.html
https://android.googlesource.com/device/samsung/tuna/+/fd63d70c864a1196738ab081bfd063c93081e77a

Change-Id: I18634fce31e7c761d3f4bb9ac541ed4ffdb247d0
Merge branch 'cm-10.2' into martincz