drm/i915: pass dev_priv explicitly to ICL_VIDEO_DIP_PPS_ECC

Avoid the implicit dev_priv local variable use, and pass dev_priv
explicitly to the ICL_VIDEO_DIP_PPS_ECC register macro.

Reviewed-by: Chaitanya Kumar Borah <chaitanya.kumar.borah@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/620fd2da6eea334bf9a5d1b93717ca1176c4203e.1716808214.git.jani.nikula@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>