drm/i915: vlv: fix gunit HW state corruption during S4 suspend
drm/i915: vlv: fix gunit HW state corruption during S4 suspend

During S4 freeze we don't call intel_suspend_complete(), which would
save the gunit HW state, but during S4 thaw/restore events we call
intel_resume_prepare() which restores it, thus ending up in a corrupted
HW state.

Fix this by calling intel_suspend_complete() from the corresponding
freeze_late event handler.

The issue was introduced in
commit 016970beb05da6285c2f3ed2bee1c676cb75972e
Author: Sagar Kamble <62b58dd0eb53fa21fa48cd26c48bd762ae55ccd5@intel.com>
Date:   Wed Aug 13 23:07:06 2014 +0530

CC: Sagar Kamble <62b58dd0eb53fa21fa48cd26c48bd762ae55ccd5@intel.com>
Signed-off-by: Imre Deak <fbd5edba1988036c8923f0cca0cce6ac4811db29@intel.com>
Reviewed-by: Ville Syrjälä <cd6e8d405ca90be3a03d5427c5b24fbd2d68dcc4@linux.intel.com>
Signed-off-by: Daniel Vetter <c1b6782c4af8f0673da8923a0702a1832e5940f4@ffwll.ch>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs