drm/i915: Define Intel HDCP2.2 registers

Intel HDCP2.2 registers are defined with addr offsets and bit details.

v2:
  Replaced the arith calc with _PICK [Sean Paul]
v3:
  No changes.
v4:
  %s/HDCP2_CTR_DDI/HDCP2_CTL_DDI [Uma]
v5:
  Added parentheses for the parameters of macro.
v6:
  No changes
v7:
  No changes

Signed-off-by: Ramalingam C <ramalingam.c@intel.com>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Reviewed-by: Uma Shankar <uma.shankar@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/1540806351-7137-7-git-send-email-ramalingam.c@intel.com