aux/trace: dump more pipe_vertex_element members

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/12754>

src/gallium/auxiliary/driver_trace/tr_dump_state.c

@@ -700,6 +700,10 @@ void trace_dump_vertex_element(const struct pipe_vertex_element *state)
 
    trace_dump_member(uint, state, vertex_buffer_index);
 
+   trace_dump_member(uint, state, instance_divisor);
+
+   trace_dump_member(bool, state, dual_slot);
+
    trace_dump_member(format, state, src_format);
 
    trace_dump_struct_end();