All r/w debugfs files are created equal.

v2: Add some newlines to make the code easier on the eyes as requested
by Ben Widawsky.
Reviewed-by: NBen Widawsky <ben@bwidawsk.net>
Reviewed-by: NKenneth Graunke <kenneth@whitecape.org>
Reviewed-by: NEugeni Dodonov <eugeni.dodonov@intel.com>
Signed-Off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>