Add option to force high-end graphics on low memory devices

Change-Id: Iac98668bcf9a3b539c6b700a08ce1c1ec022ced3
RAM bar (2/2)
Thanks to @kufikugel for the code ported from 4.3

Change-Id: I26059f2aea6116398ddf6dcdbbbd1a01e05729ed