powerpc/8xx: Allow pinning IMMR TLB when using early debug console

[Michael Ellerman]

On Thu, 2018-12-20 at 07:25:28 UTC, Christophe Leroy wrote:
> CONFIG_EARLY_DEBUG_CPM requires IMMR area TLB to be pinned
> otherwise it doesn't survive MMU_init, and the boot fails.
> 
> Signed-off-by: Christophe Leroy <christophe.leroy at c-s.fr>

Applied to powerpc next, thanks.

https://git.kernel.org/powerpc/c/96d19d70e1012383365c68e271d99f

cheers