gallium: add compute shader IR type

Signed-off-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Reviewed-by: Ilia Mirkin <imirkin@alum.mit.edu>
Reviewed-by: Dave Airlie <airlied@redhat.com>

src/mesa/state_tracker/st_program.c

@@ -1463,6 +1463,7 @@ st_translate_compute_program(struct st_context *st,
    st_translate_program_common(st, &stcp->Base.Base, stcp->glsl_to_tgsi, ureg,
                                TGSI_PROCESSOR_COMPUTE, &prog);
 
+   stcp->tgsi.ir_type = PIPE_SHADER_IR_TGSI;
    stcp->tgsi.prog = prog.tokens;
    stcp->tgsi.req_local_mem = stcp->Base.SharedSize;
    stcp->tgsi.req_private_mem = 0;