LU-13355 crypto: adler32 wrapper in libcfs

LU-13355 crypto: adler32 wrapper in libcfs

libcfs has wrappers in order to be able to use adler32 as any other
crypto module. But libcfs should not be considered as the owner of
this implementation.

Signed-off-by: Sebastien Buisson <sbuisson@ddn.com>
Change-Id: I66da322b7deae7aeb7f2fb95ede9ee1eff43c70c
Reviewed-on: https://review.whamcloud.com/37878
Tested-by: jenkins <devops@whamcloud.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: James Simmons <jsimmons@infradead.org>
Tested-by: Maloo <maloo@whamcloud.com>