powerpc/msi: Fix compile error on mpc83xx

[Michael Ellerman]

On Fri, 2018-10-19 at 06:12:50 UTC, Christophe Leroy wrote:
> mpic_get_primary_version() is not defined when not using MPIC.
> The compile error log like:
> 
> arch/powerpc/sysdev/built-in.o: In function `fsl_of_msi_probe':
> fsl_msi.c:(.text+0x150c): undefined reference to `fsl_mpic_primary_get_version'
> 
> Signed-off-by: Jia Hongtao <hongtao.jia at freescale.com>
> Signed-off-by: Scott Wood <scottwood at freescale.com>
> Reported-by: Radu Rendec <radu.rendec at gmail.com>
> Fixes: 807d38b73b6 ("powerpc/mpic: Add get_version API both for internal and external use")
> Cc: stable at vger.kernel.org
> Signed-off-by: Christophe Leroy <christophe.leroy at c-s.fr>

Applied to powerpc next, thanks.

https://git.kernel.org/powerpc/c/0f99153def98134403c9149128e59d

cheers