[Intel-gfx] pipe CRCs, intel-gpu-tools

[Damien Lespiau]

And now the igt part, that adds a basic test using CRCs.

-- 
Damien

 lib/Makefile.am          |   4 +
 lib/drmtest.c            |   8 ++
 lib/drmtest.h            |  16 +++
 lib/igt_debugfs.c        | 283 ++++++++++++++++++++++++++++++++++++++++
 lib/igt_debugfs.h        |  77 +++++++++++
 lib/igt_display.c        |  41 ++++++
 lib/igt_display.h        |  57 ++++++++
 tests/.gitignore         |   1 +
 tests/Makefile.am        |   1 +
 tests/debugfs_pipe_crc.c | 237 +++++++++++++++++++++++++++++++++
	   10 files changed, 725 insertions(+)