drm/i915/icl: Enable the extra video decode and enhancement boxes for Icelake 11

Icelake 11 has one vebox and two vdboxes (0 and 2).

Bspec: 21140

v2: Split out in two (Daniele)

Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Signed-off-by: Oscar Mateo <oscar.mateo@intel.com>
Reviewed-by: Michel Thierry <michel.thierry@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180316121456.11577-2-mika.kuoppala@linux.intel.com


Signed-off-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>