Revert to an L3 non-hash model, for performance reasons.

v2:
  - Place the WA name above the actual change
  - Improve the register naming
v3:
  - Rebased
  - Renamed to Wa_1604223664
v4: Rebased on top of the WA refactoring
v5:
  - Added References (Mika)
  - Fixed wrong mask and value (Mika)
  - Do not apply together with another WA for the same
    register (not worth the hassle)
v6:
  - Rebased
  - C, not lisp (Chris)

References: HSDES#1604223664
Signed-off-by: Oscar Mateo <oscar.mateo@intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Signed-off-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1525814984-20039-5-git-send-email-oscar.mateo@intel.com