Comment # 2 on bug 91985 from Kai

Ahrg, pasted wrong commit, the following is the correct one:

commit f9caabe8f1bff86d19b53d9ecba5c72b238d9e23
Author: Dave Airlie <airlied@redhat.com>
Date:   Fri Sep 11 04:43:53 2015 +0100

    r600g: lower number of driver const buffers

    I'm going to want a driver constant buffer for tess to coordinate
    LDS storage, so before I go tackling that I decided to merge the
    clip/samplepos and texture info buffers into one. So I can steal
    the spare one.

    This creates a single constant buffer between the two, with
    clip/samplepos taking up a reserved 128 bytes at the start.

    Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
    Reviewed-by: Glenn Kennard <glenn.kennard@gmail.com>
    Signed-off-by: Dave Airlie <airlied@redhat.com>

It's basically that R600_UCP_CONST_BUFFER was replaced by
R600_BUFFER_INFO_CONST_BUFFER AFAICT and this place in r600_llvm.c was
forgotten.