drm/i915: pass dev_priv explicitly to CURPOS_ERLY_TPT

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

Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/2263b6412e983026990f7f6730b0b1141be4fd0f.1715774156.git.jani.nikula@intel.com


Signed-off-by: Jani Nikula <jani.nikula@intel.com>