yuga: Increase HWUI memory limits

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

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

Change-Id: I4dac1549e5a3f581bc9fecbc4e4edd3c043269c4