[ATM]: proper prototypes in net/atm/mpc.h (and reduce ifdef clutter)

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Chas Williams <chas@cmf.nrl.navy.mil>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/atm/mpc.h b/net/atm/mpc.h
index 863ddf6..3c7981a 100644
--- a/net/atm/mpc.h
+++ b/net/atm/mpc.h
@@ -50,4 +50,12 @@
 struct seq_file;
 void atm_mpoa_disp_qos(struct seq_file *m);
 
+#ifdef CONFIG_PROC_FS
+int mpc_proc_init(void);
+void mpc_proc_clean(void);
+#else
+#define mpc_proc_init() (0)
+#define mpc_proc_clean() do { } while(0)
+#endif
+
 #endif /* _MPC_H_ */