perf hists: Fix HISTC_MEM_DCACHELINE width setting

Set correct width for unresolved mem_dcacheline addr.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Don Zickus <dzickus@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Fixes: 9b32ba71 ("perf tools: Add dcacheline sort")
Link: http://lkml.kernel.org/r/1453290995-18485-3-git-send-email-jolsa@kernel.org


Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>