drm/i915: Remove incorrect comment about struct mutex

This statenment became false here:

commit 4fc688ce79
Author: Jesse Barnes <jbarnes@virtuousgeek.org>
Date:   Fri Nov 2 11:14:01 2012 -0700

    drm/i915: protect RPS/RC6 related accesses (including PCU) with a new mutex

Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Ben Widawsky 2014-01-21 16:55:01 -08:00 • committed by Daniel Vetter
commit f113d75019