drm/i915: Debugfs interface to read GuC load status
drm/i915: Debugfs interface to read GuC load status

The new node provides access to the status of the GuC-specific loader;
also the scratch registers used for communication between the i915
driver and the GuC firmware.

v2:
    Changes to output formats per Chris Wilson's suggestions

v6:
    Rebased

Issue: VIZ-4884
Signed-off-by: Alex Dai <5900453bed04d10de9d8f6afb7187a07f8704bb0@intel.com>
Signed-off-by: Dave Gordon <5149a2b8c2356c5ae3395d41127c879982aacbd4@intel.com>
Reviewed-by: Tom O'Rourke <65356acdea8e874b4f8d4b467858cc41cc28e3c4@intel.com>
Signed-off-by: Daniel Vetter <c1b6782c4af8f0673da8923a0702a1832e5940f4@ffwll.ch>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs