This makes the error message slightly more useful.

Changes since v1:
- Use ktime_get() while irqs are still disabled. (vsyrjala)
Signed-off-by: NMaarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: NVille Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>