gallium: Fix llvmpipe on big-endian machines Reviewed-by: Adam Jackson <ajax@redhat.com> Reviewed-by: Adam Jackson <ajax@redhat.com> Reviewed-by: Adam Jackson <ajax@redhat.com> Reviewed-by: Adam Jackson <ajax@redhat.com> Reviewed-by: Adam Jackson <ajax@redhat.com> Reviewed-by: Adam Jackson <ajax@redhat.com> Author: Adam Jackson <ajax@redhat.com> Reviewed-by: Adam Jackson <ajax@redhat.com> Reviewed-by: Adam Jackson <ajax@redhat.com> Reviewed-by: Adam Jackson <ajax@redhat.com> Reviewed-by: Adam Jackson <ajax@redhat.com> Author: Adam Jackson <ajax@redhat.com> Signed-off-by: Adam Jackson <ajax@redhat.com> Reviewed-by: Adam Jackson <ajax@redhat.com> Author: Adam Jackson <ajax@redhat.com> Signed-off-by: Adam Jackson <ajax@redhat.com> Author: Adam Jackson <ajax@redhat.com> Signed-off-by: Adam Jackson <ajax@redhat.com> Signed-off-by: Adam Jackson <ajax@redhat.com>