drm/xe: Handle Wa_22010954014 and Wa_14022085890 as device workarounds

drm/xe: Handle Wa_22010954014 and Wa_14022085890 as device workarounds

When Wa_22010954014 and Wa_14022085890 were first implemented, we didn't
have a device workaround infrastructure so we hacked them into the GT
workaround list.  Now that we have proper device workaround support,
move them to the proper place.  Note that Wa_14022085890 specifically
applies to BMG-G21 platforms, so this requires defining a BMG
subplatform to capture the correct subset of device IDs.

Reviewed-by: Gustavo Sousa <gustavo.sousa@intel.com>
Link: https://lore.kernel.org/r/20251013200944.2499947-40-matthew.d.roper@intel.com
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>