lsm: consolidate all of the LSM framework initcalls

lsm: consolidate all of the LSM framework initcalls

The LSM framework itself registers a small number of initcalls, this
patch converts these initcalls into the new initcall mechanism.

Reviewed-by: Casey Schaufler <casey@schaufler-ca.com>
Reviewed-by: John Johansen <john.johhansen@canonical.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>