drm/i915: Added BXT check in HAS_CORE_RING_FREQ macro
drm/i915: Added BXT check in HAS_CORE_RING_FREQ macro

Updated the HAS_CORE_RING_FREQ macro to add the broxton check,
so as to disallow the programming & read of ring frequency
table for it.

Issue: VIZ-5144
Suggested-by: Daniel Vetter <c1b6782c4af8f0673da8923a0702a1832e5940f4@ffwll.ch>
Signed-off-by: Akash Goel <43c08a34c75a22c720e674b49d601292087a879d@intel.com>
Reviewed-by: Rodrigo Vivi <f714145d6ee82178e54021e0c168f56d17b53c9c@intel.com>
Signed-off-by: Daniel Vetter <c1b6782c4af8f0673da8923a0702a1832e5940f4@ffwll.ch>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs