drm/i915: Don't require dev->struct_mutex in psr_match_conditions

Since I've reworked psr support to no longer require x-tiling we don't
check any state protected by the Giant GEM Lock. So drop that check.

Also boo for lockdep_assert_held for not yelling when lockdep is
disabled.

Cc: Paulo Zanoni <przanoni@gmail.com>
Reported-by: NPaulo Zanoni <przanoni@gmail.com>
Acked-by: NPaulo Zanoni <przanoni@gmail.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>

drivers/gpu/drm/i915/intel_dp.c

@@ -1806,7 +1806,6 @@ static bool intel_edp_psr_match_conditions(struct intel_dp *intel_dp)
 	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
 
 	lockdep_assert_held(&dev_priv->psr.lock);
-	lockdep_assert_held(&dev->struct_mutex);
 	WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex));
 	WARN_ON(!drm_modeset_is_locked(&crtc->mutex));