Add 3GB dalvik heap and hwui memory

Should be used on devices with 3gb's of ram (Bacon, LG G3, etc)
Change-Id: I5833a19ea77b99009fc9f9c7c2a967b0dde06b77
Merge "Add 3GB dalvik heap and hwui memory" into kk4.4-caf
Add hdpi-2048 tunings

Change-Id: I65348d7e5dff26858168fae671d7337a887575da
sensorservice: Register orientation sensor if HAL doesn't provide it

 * In KitKat and on most Samsung devices, the orientation sensor is
   not getting registered, and makes the compass non-working in a lot
   of apps. This patch enables the sensor for such devices.

Change-Id: I0ebba72ec4aa2cfa02c21a6daff0c356c6793fd0
Merge remote-tracking branch 'upstream/kk4.4-caf' into kk4.4-caf