[binutils-gdb] Add support for detecting Freescale S12Z binaries in readelf.

[sergiodj+buildbot@sergiodj.net]

*** TEST RESULTS FOR COMMIT 637b19704cf8325875de8df4f8b000197d261e3b ***

Author: John Darrington <john@darrington.wattle.id.au>
Branch: master
Commit: 637b19704cf8325875de8df4f8b000197d261e3b

Add support for detecting Freescale S12Z binaries in readelf.

* include/elf/common.h (EM_S12Z): New macro
* binutils/readelf.c (get_machine_name): EM_S12Z - handle new case.