Illumos Crypto Port module added to enable native encryption in zfs

A port of the Illumos Crypto Framework to a Linux kernel module (found
in module/icp). This is needed to do the actual encryption work. We cannot
use the Linux kernel's built in crypto api because it is only exported to
GPL-licensed modules. Having the ICP also means the crypto code can run on
any of the other kernels under OpenZFS. I ended up porting over most of the
internals of the framework, which means that porting over other API calls (if
we need them) should be fairly easy. Specifically, I have ported over the API
functions related to encryption, digests, macs, and crypto templates. The ICP
is able to use assembly-accelerated encryption on amd64 machines and AES-NI
instructions on Intel chips that support it. There are place-holder
directories for similar assembly optimizations for other architectures
(although they have not been written).

Signed-off-by: Tom Caputi <tcaputi@datto.com>
Signed-off-by: Tony Hutter <hutter2@llnl.gov>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Issue #4329

scripts/common.sh.in

@@ -12,7 +12,7 @@ if [ -f "${basedir}/../${SCRIPT_CONFIG}" ]; then
 . "${basedir}/../${SCRIPT_CONFIG}"
 else
 KERNEL_MODULES=(zlib_deflate zlib_inflate)
-MODULES=(spl splat zavl znvpair zunicode zcommon zfs)
+MODULES=(spl splat zavl znvpair zunicode zcommon icp zfs)
 fi
 
 PROG="<define PROG>"