screen record in landscape only
Revert "Board has NEON support"

This reverts commit 4eb9922270ca609bec39d5bf57f665ded4b40349.
Disable triple buffering

All buffers are composited by the GPU now. For the memory saving, it
seems better to use double buffering.
Revert "Tell the kernel to keep extra ~9MB memory free"

This reverts commit d6911b3e9192cbde1af8d64dc2254a5c8f2d3c11.
Use Android prop to keep memory free
set ro.bq.gpu_to_cpu_unsupported properly