selftests/powerpc: Fix build break caused by EXPORT_SYMBOL changes

[Michael Ellerman]

On Wed, 2016-05-10 at 05:22:57 UTC, Michael Ellerman wrote:
> The changes to make EXPORT_SYMBOL work in asm, specifically commit
> 9445aa1a3062 ("ppc: move exports to definitions"), in the kbuild tree,
> breaks some of our selftests.
> 
> That is because we symlink the kernel code into the selftest, and shim
> the required headers, and we are now missing asm/export.h
> 
> So create a minimal export.h to keep the tests building once powerpc and
> the kbuild trees are merged.
> 
> Signed-off-by: Michael Ellerman <mpe at ellerman.id.au>

Applied to powerpc next.

https://git.kernel.org/powerpc/c/8321564a11bbeadffcc7d6335bcf3c

cheers