[patch] zfs.ko loading failure

Hi,

After recent changes (r191915) opensolaris.ko refers to utsname
variable that's actually compiled into zfs.ko

zfs.ko itself requires symbols from opensolaris.ko and this circular
dependency leads to failure to load zfs.ko.

Attached patch moves opensolaris_misc.c to modules/opensolaris and
fixes the issue

--Artem