Replace CONFIG_CPU_COUNT with plain CPU_COUNT

Fixes double-declartion issue of CPU_COUNT when fio.h is included by
third-party projects.

Checking for a define of CPU_COUNT seems to be a common approach
to deal with different versions of sched.h

Signed-off-by: Daniel Gollub <daniel.gollub@gmail.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
2 files changed