intel/dump_gpu: add an option to capture a single frame

We use the driver identifier buffer to get the information about the
current frame.

Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/2201>
3 files changed