LU-2212 crypto: add crc32c module loading to libcfs

LU-2212 crypto: add crc32c module loading to libcfs

This patch add automatically module loading for crc32c
when libcfs is starting.

Signed-off-by: Alexander Boyko <alexander_boyko@xyratex.com>
Xyratex-bug-id: MRP-725
Change-Id: I3bd8a29cd05b25b77a57f6df254f3d39641d99a1
Reviewed-on: http://review.whamcloud.com/4372
Tested-by: Hudson
Tested-by: Maloo <whamcloud.maloo@gmail.com>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Reviewed-by: Shuichi Ihara <sihara@ddn.com>
Reviewed-by: James Simmons <uja.ornl@gmail.com>