drm: Use a nondestructive mode for output detect when polling (v2)

v2: Julien Cristau pointed out that @nondestructive results in
double-negatives and confusion when trying to interpret the parameter,
so use @force instead. Much easier to type as well. ;-)

And fix the miscompilation of vmgfx reported by Sedat Dilek.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: stable@kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/drm/i915/intel_dvo.c b/drivers/gpu/drm/i915/intel_dvo.c
index f0de1ad..7c9ec14 100644
--- a/drivers/gpu/drm/i915/intel_dvo.c
+++ b/drivers/gpu/drm/i915/intel_dvo.c
@@ -222,8 +222,7 @@
  * Unimplemented.
  */
 static enum drm_connector_status
-intel_dvo_detect(struct drm_connector *connector,
-		 bool nondestructive)
+intel_dvo_detect(struct drm_connector *connector, bool force)
 {
 	struct drm_encoder *encoder = intel_attached_encoder(connector);
 	struct intel_dvo *intel_dvo = enc_to_intel_dvo(encoder);