don't disable lockscreen widgets on low memory devices (1/2)

Change-Id: I4ed76e259d156be43b85645e1473f35b762f18d7
allow forcing HighEndGfx mode

people have already started fipping the lomRam prop to enable
transparent status bar, this will enable it with fewer
repercussions

Change-Id: Ied6de65276425fa1e7db0bf9da35f1932a355172