drm/i915: set FDI_RX_MISC to recommended values on CPT/PPT

drm/i915: set FDI_RX_MISC to recommended values on CPT/PPT

My machine here has the correct ones already, but better safe
than sorry. IBX has different settings for that register, and
on IBX the device defaults match the recommended values. Hence
I did not add the respective writes for IBX.

LPT needs the same settings, but that has been done already

commit 0085a93bbf06a278436590fada9a46ef7d84064b
Author: Eugeni Dodonov <eugeni.dodonov@intel.com>
Date:   Wed Jul 4 20:15:16 2012 -0300

    drm/i915: program FDI_RX TP and FDI delays

Cc: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>