watchdog: Fix section mismatch and potential undefined behavior.

Commit d9ca07a05ce1 ("watchdog: Avoid kernel crash when disabling
watchdog") introduces a section mismatch.

Now that we reference no_watchdog from non-__init code it can no longer
be __initdata.

Signed-off-by: David Daney <[e-mail]>
Cc: Stephane Eranian <[e-mail]>
Cc: Peter Zijlstra <[e-mail]>
Cc: Ingo Molnar <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

kernel/watchdog.c

···
 static DEFINE_PER_CPU(struct perf_event *, watchdog_ev);
 #endif
 
-static int __initdata no_watchdog;
+static int no_watchdog;
 
 
 /* boot commands */