drm/i915/display: Workaround cursor left overs with PSR2 selective fetch enabled

drm/i915/display: Workaround cursor left overs with PSR2 selective fetch enabled

[ Upstream commit 1f3a11c341ab211d6ba55ef3d58026b7b5319945 ]

Not sure why but when moving the cursor fast it causes some artifacts
of the cursor to be left in the cursor path, adding some pixels above
the cursor to the damaged area fixes the issue, so leaving this as a
workaround until proper fix is found.

This is reproducile on TGL and ADL-P.

Cc: Gwan-gyeong Mun <gwan-gyeong.mun@intel.com>
Reviewed-by: Gwan-gyeong Mun <gwan-gyeong.mun@intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210914212507.177511-3-jose.souza@intel.com
Stable-dep-of: 71c602103c74 ("drm/i915/psr: Use calculated io and fast wake lines")
Signed-off-by: Sasha Levin <sashal@kernel.org>