[PATCH] isdn: hardware: mISDN: Remove reference to CONFIG_8xx

[David Miller]

From: Christophe Leroy <christophe.leroy at c-s.fr>
Date: Thu, 16 Mar 2017 10:18:02 +0100 (CET)

> CONFIG_8xx is deprecated and should soon be removed in favor
> of CONFIG_PPC_8xx.
> Anyway, hfc_multi_8xx.h only uses 8xx I/O ports which are
> linked to the CPM1 communication processor included in the 8xx
> rather than the 8xx itself.
> 
> This patch therefore makes it dependent on CONFIG_CPM1 instead,
> like several other drivers.
> 
> Signed-off-by: Christophe Leroy <christophe.leroy at c-s.fr>

Applied.