The ornamental design for a trim reveal extrusion, as shown and described.
FIG. 1 is a perspective view of a trim reveal extrusion showing my new design; and,
FIG. 2 is a cross-sectional view thereof.
The trim reveal extrusion is shown with a symbolic break in its length. The appearance of any portion of the trim reveal extrusion between the lagged break lines form no part of the claimed design.