[PATCH] isdn/capi: hide unused procfs helpers

When CONFIG_PROC_FS isn't set, gcc warning this:

drivers/isdn/capi/capi.c:1324:12: warning: ‘capi20_proc_show’ defined but not used [-Wunused-function]
 static int capi20_proc_show(struct seq_file *m, void *v)
            ^
drivers/isdn/capi/capi.c:1347:12: warning: ‘capi20ncci_proc_show’ defined but not used [-Wunused-function]
 static int capi20ncci_proc_show(struct seq_file *m, void *v)
            ^
drivers/isdn/capi/capidrv.c:2454:12: warning: ‘capidrv_proc_show’ defined but not used [-Wunused-function]
 static int capidrv_proc_show(struct seq_file *m, void *v)
            ^

We can fix the warning by adding the same #ifdef around them.

Signed-off-by: YueHaibing <redacted>
---
 drivers/isdn/capi/capi.c    | 2 ++
 drivers/isdn/capi/capidrv.c | 2 ++
 2 files changed, 4 insertions(+)

diff --git a/drivers/isdn/capi/capi.c b/drivers/isdn/capi/capi.c
index 6e0c281..594f767 100644
--- a/drivers/isdn/capi/capi.c
+++ b/drivers/isdn/capi/capi.c

@@ -1317,6 +1317,7 @@ static inline void capinc_tty_exit(void) { }
 
 /* -------- /proc functions ----------------------------------------- */
 
+#ifdef CONFIG_PROC_FS
 /*
  * /proc/capi/capi20:
  *  minor applid nrecvctlpkt nrecvdatapkt nsendctlpkt nsenddatapkt

@@ -1359,6 +1360,7 @@ static int capi20ncci_proc_show(struct seq_file *m, void *v)
 	mutex_unlock(&capidev_list_lock);
 	return 0;
 }
+#endif
 
 static void __init proc_init(void)
 {

diff --git a/drivers/isdn/capi/capidrv.c b/drivers/isdn/capi/capidrv.c
index ee510f9..c6f45d7 100644
--- a/drivers/isdn/capi/capidrv.c
+++ b/drivers/isdn/capi/capidrv.c

@@ -2447,6 +2447,7 @@ lower_callback(struct notifier_block *nb, unsigned long val, void *v)
 	return NOTIFY_OK;
 }
 
+#ifdef CONFIG_PROC_FS
 /*
  * /proc/capi/capidrv:
  * nrecvctlpkt nrecvdatapkt nsendctlpkt nsenddatapkt

@@ -2460,6 +2461,7 @@ static int capidrv_proc_show(struct seq_file *m, void *v)
 		   global.ap.nsentdatapkt);
 	return 0;
 }
+#endif
 
 static void __init proc_init(void)
 {