Introduce memory requirement for 540p and lower devices

Add smaller memory requirement for devices with 540p and
lower screen resolutions for Lollipop MR1.

Restore requirement on when ActivityManager.isLowRamDevice()
must return "true", which was removed in Android 5.0 CDD as
512MB available to kernel and above was not a supported
memory configuration for non-watch devices.

Bug: 17364400
Bug: 20142414

Change-Id: I84f01bcbf9aa94448b1629e0e2596f9ea2dd4e56
1 file changed