drm/i915: Fix typo in semaphore debug message

Pronounces less rude when fixed.
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: http://patchwork.freedesktop.org/patch/msgid/20170220104657.5237-1-tvrtko.ursulin@linux.intel.com

drivers/gpu/drm/i915/i915_drv.c

@@ -999,7 +999,7 @@ static void intel_sanitize_options(struct drm_i915_private *dev_priv)
 	DRM_DEBUG_DRIVER("ppgtt mode: %i\n", i915.enable_ppgtt);
 
 	i915.semaphores = intel_sanitize_semaphores(dev_priv, i915.semaphores);
-	DRM_DEBUG_DRIVER("use GPU sempahores? %s\n", yesno(i915.semaphores));
+	DRM_DEBUG_DRIVER("use GPU semaphores? %s\n", yesno(i915.semaphores));
 }
 
 /**