PS3: Fix build with 32-bit toolchains

[Kumar Gala]

On Jul 19, 2007, at 4:47 PM, Geoff Levand wrote:

> The PS3 bootwrapper files use instructions only available on
> 64-bit CPUs.  Add the code generation directive '.machine "ppc64"'
> for toolchains configured for 32-bit CPUs.
>
> Signed-off-by: Geoff Levand <geoffrey.levand at am.sony.com>

while this is a fix, why are we even building it Grant's case of  
building 834x itx.

- k