Add the initial set of workarounds for Xe_HP SDV.

There are some additional workarounds specific to the compute engines
that we're holding back for now.  Those will be added later, after
general compute engine support lands.

Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: NStuart Summers <stuart.summers@intel.com>
Signed-off-by: NMatt Roper <matthew.d.roper@intel.com>
Reviewed-by: NClint Taylor <Clinton.A.Taylor@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20211102222511.534310-2-matthew.d.roper@intel.com