[PATCH] kernel/watchdog: add missing prototypes for weak functions

[Mathieu Malaterre <malat@debian.org>]

In commit 73ce0511c436 ("kernel/watchdog.c: move hardlockup detector to
separate file") two new functions were added ‘watchdog_nmi_enable’ and
‘watchdog_nmi_disable’ the functions were changed from static to weak.
In which case expose the function declarations in header file.

Silence the following gcc warnings:

  kernel/watchdog.c:109:12: warning: no previous prototype for ‘watchdog_nmi_enable’ [-Wmissing-prototypes]
  kernel/watchdog.c:115:13: warning: no previous prototype for ‘watchdog_nmi_disable’ [-Wmissing-prototypes]

Cc: Babu Moger <babu.moger@oracle.com>
Signed-off-by: Mathieu Malaterre <malat@debian.org>
---
 include/linux/nmi.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/linux/nmi.h b/include/linux/nmi.h
index b8d868d23e79..50d143995338 100644
--- a/include/linux/nmi.h
+++ b/include/linux/nmi.h
@@ -113,6 +113,8 @@ static inline int hardlockup_detector_perf_init(void) { return 0; }
 void watchdog_nmi_stop(void);
 void watchdog_nmi_start(void);
 int watchdog_nmi_probe(void);
+int watchdog_nmi_enable(unsigned int cpu);
+void watchdog_nmi_disable(unsigned int cpu);
 
 /**
  * touch_nmi_watchdog - restart NMI watchdog timeout.
-- 
2.11.0