Add heap configuration for 1080p phones with 2048m

 * Increase heap start size to 16m to minimize GC with larger bitmaps

Change-Id: I8fbba2e5a2a2cf2d7a6898ca6bae8639d6cf5a19
Merge remote-tracking branch 'cyan/cm-10.1' into cm-10.1
Merge remote-tracking branch 'cm/cm-10.1' into cm-10.1-mb52x
Merge remote-tracking branch 'cm-10.1-mb52x/cm-10.1' into cm-10.1-mb52x