gralloc: Add workaround for Jellybean camera drivers

* Arcee is smarter than I am, and discovered that we can simply swap
  two fields to ensure compatibility with Jellybean camera drivers
  having the metadata fields in the private_handle_t struct.
* Enable this by defining QCOM_BSP_CAMERA_ABI_HACK.

Change-Id: I2cd267dd5550404cf2e61d76fb805e780cd99d3c
Revert "Revert "display: rename ion_allocation_data.heap_mask to heap_id_mask""

This reverts commit 3cb1151fb2d2301d6fc062f3be36368cb3a8ff74.