From: Tom Rini <trini@kernel.crashing.org>
      Peter Wahl <PeterWahl@web.de>

PPC32: Fix the mkprep util to work correctly on Solaris 8.

- There is a very odd problem with the alignment of dword_t values
  which causes this program to not work correctly when compiled on
  Solaris 8.  The workaround is not use a pointer and to memcpy the
  values instead.