Update notes for submitted changes

* 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 Those Changes are taken from * CM (see https://github.com/CyanogenMod/android_frameworks_native/commit/c3b18f73fd7ff58794f39ad36a49c7bce996967c) * CM (see http://review.cyanogenmod.org/#/c/53162/)