drm/i915: Plumb 'dsb' all way to the color commit hooks

Pass the 'dsb' all the way down to the color commit hooks so that
we'll be able to update the double buffered color management registers
(eg. CSC) via the DSB.

Reviewed-by: Animesh Manna <animesh.manna@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240930170415.23841-13-ville.syrjala@linux.intel.com