hg: graal/graal: NFI: initialization only if platform is x86

[doug.simon at oracle.com]

Changeset: 91e7d77cfb81
Author:    Matthias Grimmer <grimmer at ssw.jku.at>
Date:      2014-08-07 08:04 +0200
URL:       http://hg.openjdk.java.net/graal/graal/rev/91e7d77cfb81

NFI: initialization only if platform is x86

! src/share/vm/graal/graalRuntime.cpp