MIPS: Alchemy: Repair db1500/bosporus builds

A few hunks somehow ended up outside their #ifdef/endif blocks,
leading to -Werror-induces build failures.

Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com>
To: Linux-MIPS <linux-mips@linux-mips.org>
Patchwork: http://patchwork.linux-mips.org/patch/1003/


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