frameworks/native: Add support for Tegra3 based devices

By adding options:
* BOARD_EGL_SKIP_FIRST_DEQUEUE to add back the legacy EGL workaround
* BOARD_USE_MHEAP_SCREENSHOT to support mHeap-based Screenshots

Change-Id: I41be2cedd54ed6f72d1a498b1d11e8768406fe0e