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 an end elevational view thereof.
The broken lines shown in FIG. 1 immediately adjacent to the trim reveal extrusion form no part of the claimed design. The remainder of the broken lines in FIG. 1 represent environmental structure which forms no part of the claimed design.