staging: lustre: remove almost all crypto layer wrappers

Almost all of these are just a straight function name rename, so fix
them all up to call the crypto layer properly, no need for a #define to
hide things.

Cc: Peng Tao <tao.peng@emc.com>
Cc: Andreas Dilger <andreas.dilger@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>