MIPS: DEC: Bus error handler <asm/cpu-type.h> fixes

Commit 69f24d17 [MIPS: Optimize
current_cpu_type() for better code.] missed an update for two DECstation
bus error support files that now do not build, this is a fix.

Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/6667/


Signed-off-by: Ralf Baechle <ralf@linux-mips.org>