tools headers UAPI: Sync drm/i915_drm.h with the kernel sources

tools headers UAPI: Sync drm/i915_drm.h with the kernel sources

To pick the changes in:

  223c591a27159e70 ("drm/i915/userptr: Probe existence of backing struct pages upon creation")
  d655c13d2e0f8536 ("drm/i915/guc: Implement GuC priority management")
  eae682475c458edb ("drm/i915/uapi: reject set_domain for discrete")
  ff59262818ba63a1 ("drm/i915: Add TTM offset argument to mmap.")
  f15469219992c64a ("drm/i915/uapi: convert drm_i915_gem_userptr to kernel doc")
  9117fbe25883e94e ("drm/i915/uapi: reject caching ioctls for discrete")
  baee6516b577e32f ("drm/i915/uapi: convert drm_i915_gem_set_domain to kernel doc")
  146ea55e6fa505b2 ("drm/i915/uapi: convert drm_i915_gem_caching to kernel doc")
  cf9b30e1ac204e7d ("drm/i915: Drop the CONTEXT_CLONE API (v2)")
  4ff33858bfb8017c ("drm/i915: Drop I915_CONTEXT_PARAM_NO_ZEROMAP")
  a6d72a285d01f300 ("drm/i915: Drop I915_CONTEXT_PARAM_RINGSIZE")
  b786c99bdc0b02e9 ("drm/i915: Document the Virtual Engine uAPI")
  38d90699a27b7663 ("drm/i915: Fix busy ioctl commentary")

That doesn't result in any changes to tooling as no new ioctl were
added (at least not perceived by tools/perf/trace/beauty/drm_ioctl.sh).

Addressing this perf build warning:

  Warning: Kernel ABI header at 'tools/include/uapi/drm/i915_drm.h' differs from latest version at 'include/uapi/drm/i915_drm.h'
  diff -u tools/include/uapi/drm/i915_drm.h include/uapi/drm/i915_drm.h

Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Jason Ekstrand <jason@jlekstrand.net>
Cc: John Harrison <John.C.Harrison@Intel.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Matthew Auld <matthew.auld@intel.com>
Cc: Matthew Brost <matthew.brost@intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>