LU-4199 libcfs: add CPU table functions for uniprocessor

LU-4199 libcfs: add CPU table functions for uniprocessor

Some CPU table functions for uniprocessor architecture is
missing.

Signed-off-by: Li Xi <lixi@ddn.com>
Signed-off-by: James Simmons <uja.ornl@gmail.com>
Change-Id: I2b41af63ebb5e4a1362e026d75b87855c1e7e2fa
Reviewed-on: http://review.whamcloud.com/8873
Tested-by: Jenkins
Reviewed-by: Bob Glossman <bob.glossman@intel.com>
Reviewed-by: Dmitry Eremin <dmitry.eremin@intel.com>
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Liang Zhen <liang.zhen@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>