drm/i915/gt: Restore clear-residual mitigations for Ivybridge, Baytrail

drm/i915/gt: Restore clear-residual mitigations for Ivybridge, Baytrail

commit 09aa9e45863e9e25dfbf350bae89fc3c2964482c upstream.

The mitigation is required for all gen7 platforms, now that it does not
cause GPU hangs, restore it for Ivybridge and Baytrail.

Fixes: 47f8253d2b89 ("drm/i915/gen7: Clear all EU/L3 residual contexts")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Cc: Prathap Kumar Valsan <prathap.kumar.valsan@intel.com>
Cc: Akeem G Abodunrin <akeem.g.abodunrin@intel.com>
Cc: Bloomfield Jon <jon.bloomfield@intel.com>
Reviewed-by: Akeem G Abodunrin <akeem.g.abodunrin@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210111225220.3483-2-chris@chris-wilson.co.uk
(cherry picked from commit 008ead6ef8f588a8c832adfe9db201d9be5fd410)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>