drm/i915: pass dev_priv explicitly to PIPE_SRCSZ_ERLY_TPT

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

Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/b37217f55702fc10190c2c5aded7d845a36766f6.1714471597.git.jani.nikula@intel.com


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