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
base: Remove unused strings

Change-Id: Icf1a1c50679df64cc1c79e93f20a33212436505e