LU-6245 libcfs: replace CFS_MODULE_PARAM with linux kernel module api

Remove the CFS_MODULE_PARM wrapper and use the linux macros
module_param and MODULE_PARM_DESC instead.

Change-Id: If551518b34195caf92435189f98b01895a0b0d24
Signed-off-by: James Simmons <uja.ornl@yahoo.com>
Reviewed-on: http://review.whamcloud.com/19383
Reviewed-by: Frank Zago <fzago@cray.com>
Reviewed-by: Dmitry Eremin <dmitry.eremin@intel.com>
Reviewed-by: John L. Hammond <john.hammond@intel.com>
Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>