LSM: Record LSM name in struct lsm_info

In preparation for making LSM selections outside of the LSMs, include
the name of LSMs in struct lsm_info.

Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Casey Schaufler <casey@schaufler-ca.com>
Signed-off-by: James Morris <james.morris@microsoft.com>

security/tomoyo/tomoyo.c

@@ -551,5 +551,6 @@ static int __init tomoyo_init(void)
 }
 
 DEFINE_LSM(tomoyo) = {
+	.name = "tomoyo",
 	.init = tomoyo_init,
 };