Fix egregious typo in comment.
Signed-off-by: NValdis Kletnieks <valdis.kletnieks@vt.edu>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/10576.1464589598@turing-police.cc.vt.edu