igt@kms_fbcon_fbt@psr-suspend - incomplete -PM: suspend entry (deep)

https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_1303/bat-adls-5/igt@kms_fbcon_fbt@psr-suspend.html

<7> [322.483549] i915 0000:00:02.0: [drm:intel_backlight_enable [i915]] pipe A
<7> [322.483641] i915 0000:00:02.0: [drm:intel_dp_wait_source_oui [i915]] Performing OUI wait
<7> [322.506560] i915 0000:00:02.0: [drm:intel_backlight_set_pwm_level [i915]] set backlight PWM = 96000
<7> [322.516980] i915 0000:00:02.0: [drm:gen9_dbuf_slices_update [i915]] Updating dbuf slices to 0x3
<7> [322.517713] i915 0000:00:02.0: [drm:intel_psr_post_plane_update [i915]] Enabling PSR1
<7> [322.519607] i915 0000:00:02.0: [drm:verify_connector_state [i915]] [CONNECTOR:236:eDP-1]
<7> [322.520102] i915 0000:00:02.0: [drm:intel_modeset_verify_crtc [i915]] [CRTC:80:pipe A]
<7> [322.520925] i915 0000:00:02.0: [drm:intel_ddi_get_config [i915]] [ENCODER:235:DDI A/PHY A] Fec status: 0
<7> [322.521449] i915 0000:00:02.0: [drm:verify_single_dpll_state.isra.0 [i915]] DPLL 0
<6> [322.773296] PM: suspend entry (deep)
<6> [322.777454] Filesystems sync: 0.004 seconds