drm/i915: fix DDI get_hw_state return value

If we couldn't find a pipe we shouldn't return true.  This might be even
better as a WARN though, since it should be impossible to have the port
enabled without a pipe selected.
Signed-off-by: NJesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>

drivers/gpu/drm/i915/intel_ddi.c

@@ -1150,7 +1150,7 @@ bool intel_ddi_get_hw_state(struct intel_encoder *encoder,
 
 	DRM_DEBUG_KMS("No pipe for ddi port %i found\n", port);
 
-	return true;
+	return false;
 }
 
 static uint32_t intel_ddi_get_crtc_pll(struct drm_i915_private *dev_priv,