gralloc: Use new ION API by default

This conditionally reverts commit b519bb243a1537f7420a2e81bbfa91d38d4ae8dc
and reverses the logic to use OLD_ION_API since NEW_ION_API
is the default.

Change-Id: I3708dff82207844302431296ccfc29421d104442
display: Remove libmm-abl dependency

This lib no longer needs to be linked to any component in the
display HAL.

Change-Id: Id332d3cb22fc35e16f655d4c6127d6f1891330b0