MIPS: Fix __devinit __cpuinit confusion in cpu_cache_init

cpu_cache_init and the things it calls should all be __cpuinit instead
of __devinit.

Signed-off-by: David Daney <ddaney@caviumnetworks.com>
To: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/938/


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