Our 'headless' subtest requires fairly precise measurements to determine
the impact of the dmc upon request latency. The test cannot be effective
if we cannot execute requests quickly, so add a very short pre-pass to
check the test requirements. For this we want to specify the baseline
measurement timeout in milliseconds, allowing us to speed up our other
baseline measurements elsewhere as well.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Janusz Krzysztofik <janusz.krzysztofik@linux.intel.com>