drm/i915: make A0 wa's applied to A1

drm/i915: make A0 wa's applied to A1

Since A1 chips use the same GPU as A0, they need all the
same wa's in the i915 driver. Update some conditionals
to do this.

Signed-off-by: Tim Gore <tim.gore@intel.com>
Reviewed-by: Arun Siluvery <arun.siluvery@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1445856538-5417-1-git-send-email-tim.gore@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>