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Few testcases - dmesg-warn/dmesg-fail/abort - *ERROR* Failed to read DPCD register .*

https://intel-gfx-ci.01.org/tree/drm-tip/IGTPW_8949/bat-adls-5/igt@kms_addfb_basic@bad-pitch-0.html#dmesg-warnings64

<7> [109.635287] i915 0000:00:02.0: [drm:intel_dp_aux_xfer [i915]] AUX A/DDI A/PHY A: timeout (status 0x7c2002ff)
<7> [109.664287] i915 0000:00:02.0: [drm:intel_dp_aux_xfer [i915]] AUX A/DDI A/PHY A: timeout (status 0x7c2002ff)
<7> [109.693286] i915 0000:00:02.0: [drm:intel_dp_aux_xfer [i915]] AUX A/DDI A/PHY A: timeout (status 0x7c2002ff)
<7> [109.693401] i915 0000:00:02.0: [drm:drm_dp_dpcd_access [drm_display_helper]] AUX A/DDI A/PHY A: Too many retries, giving up. First error: -110
<3> [109.693413] i915 0000:00:02.0: [drm] *ERROR* Failed to read DPCD register 0x60
<7> [109.693430] i915 0000:00:02.0: [drm:intel_dp_get_dsc_sink_cap [i915]] DSC DPCD: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<7> [109.693534] i915 0000:00:02.0: [drm:intel_dp_detect [i915]] FEC CAPABILITY: 0
<7> [109.722287] i915 0000:00:02.0: [drm:intel_dp_aux_xfer [i915]] AUX A/DDI A/PHY A: timeout (status 0x7c2002ff)
<7> [109.751287] i915 0000:00:02.0: [drm:intel_dp_aux_xfer [i915]] AUX A/DDI A/PHY A: timeout (status 0x7c2002ff)
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