LSM: split LSM_AUDIT_DATA_FS into _PATH and _INODE

The lsm common audit code has wacky contortions making sure which pieces
of information are set based on if it was given a path, dentry, or
inode.  Split this into path and inode to get rid of some of the code
complexity.

Signed-off-by: Eric Paris <eparis@redhat.com>
Acked-by: Casey Schaufler <casey@schaufler-ca.com>

security/selinux/avc.c

@@ -531,7 +531,7 @@ int avc_audit(u32 ssid, u32 tsid,
 	 * during retry. However this is logically just as if the operation
 	 * happened a little later.
 	 */
-	if ((a->type == LSM_AUDIT_DATA_FS) &&
+	if ((a->type == LSM_AUDIT_DATA_INODE) &&
 	    (flags & IPERM_FLAG_RCU))
 		return -ECHILD;