drm/i915: move dev_priv->suspend around

drm/i915: move dev_priv->suspend around

When adding new gunk, _always_ think of a good place. Start/end
usually just means that this didn't happen, and on top of that results
in needless conflicts with other patches doing the same.

Introduced in

commit 1b3d1d2841e65c29537f2ff4d9bddb7bb7a47f9f
Author: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Date:   Tue Feb 25 17:11:28 2014 +0200

    drm/i915: Add suspend count to error state

Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>