powerpc/ps3: Fix system hang with GCC 5 builds

[Greg KH]

On Tue, Nov 29, 2016 at 10:47:32AM -0800, Geoff Levand wrote:
> GCC 5 generates different code for this bootwrapper null check
> that causes the PS3 to hang very early in its bootup.  This
> check is of limited value, so just get rid of it.
> 
> Signed-off-by: Geoff Levand <geoff at infradead.org>
> ---
>  arch/powerpc/boot/ps3-head.S | 5 -----
>  arch/powerpc/boot/ps3.c      | 8 +-------
>  2 files changed, 1 insertion(+), 12 deletions(-)

<formletter>

This is not the correct way to submit patches for inclusion in the
stable kernel tree.  Please read Documentation/stable_kernel_rules.txt
for how to do this properly.

</formletter>