Revert "powerpc/mpic: Fix problem that affinity is not updated"

Revert "powerpc/mpic: Fix problem that affinity is not updated"

This reverts commit 1badd98ea79b7b20fb4ddfea110d1bb99c33a55f.

It breaks the build on powerpc systems:

arch/powerpc/sysdev/mpic.c: In function 'irq_choose_cpu':
arch/powerpc/sysdev/mpic.c:574: error: passing argument 1 of '__cpus_equal' from incompatible pointer type

Reported-by: Jiri Slaby <jslaby@suse.cz>
Cc: Jiajun Wu <b06378@freescale.com>
Cc: Li Yang <leoli@freescale.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>