yuga: Increase HWUI memory limits

Depends on: http://review.cyanogenmod.org/#/c/43529/

Change-Id: I83de337e6ac0d8709167f96499a7c517defb42b6
yuga: drop startupflag, not used

Change-Id: I4dac1549e5a3f581bc9fecbc4e4edd3c043269c4
yuga: add camera.flash-autofocus perm

Change-Id: I7506881f60278344af23e1d2656051ed4be02110
relocate TARGET_SCREEN_{WIDTH,HEIGHT}

Change-Id: Ic2c4db152d36d64de8366cbafa6bf9d6cf9fb4d8