Details:
- Added new fields to mem_t struct definition to track the allocated (as
opposed to the currently used) dimensions of the memory region. This
allows packm_init() to be more robust in situations where memory is
already allocated but is more than needed for the current packing job.
- Updated logic in bl2_obj_set_buffer_with_cached_packm_mem() macro, used
in packm_init(), to update the "currently used" dimensions of the mem_t
object if the requested dimensions are smaller than the allocated
dimensions.
c95c270eba