This patch provides stubs for functionality otherwise provided by intel_bufmgr.
The stubbed functions all fail with a call to igt_require_f(false,"").
Defines and enums have been copied from libdrm_intel.
Due to the stubbed tests failing with an igt_require_f() call, these stubs are
not well suited for non-tests, since tools/benchmarks/etc 'skipping'
execution is unhelpful.
Signed-off-by: Robert Foss <email@example.com>
Reviewed-by: Emil Velikov <firstname.lastname@example.org>
Signed-off-by: Daniel Vetter <email@example.com>