drm/i915: Fix up some DRRS type checks

Only seamless DRRS needs the frontbuffer tracking, so check for that.
Also use != consistently instead of randomly picking < as the comparison
operator.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220310004802.16310-2-ville.syrjala@linux.intel.comReviewed-by: Jani Nikula <jani.nikula@intel.com>

drivers/gpu/drm/i915/display/intel_drrs.c

@@ -152,7 +152,7 @@ static void intel_drrs_set_state(struct drm_i915_private *dev_priv,
 		return;
 	}
 
-	if (dev_priv->drrs.type < SEAMLESS_DRRS_SUPPORT) {
+	if (dev_priv->drrs.type != SEAMLESS_DRRS_SUPPORT) {
 		drm_dbg_kms(&dev_priv->drm, "Only Seamless DRRS supported.\n");
 		return;
 	}
@@ -326,7 +326,7 @@ static void intel_drrs_frontbuffer_update(struct drm_i915_private *dev_priv,
 	struct drm_crtc *crtc;
 	enum pipe pipe;
 
-	if (dev_priv->drrs.type == DRRS_NOT_SUPPORTED)
+	if (dev_priv->drrs.type != SEAMLESS_DRRS_SUPPORT)
 		return;
 
 	cancel_delayed_work(&dev_priv->drrs.work);