debugobjects: be smarter about static objects

debugobjects: be smarter about static objects

Remove the WARN_ON() in timer_fixup_activate() and actually use the return
code from fixup to tell the debugobjects code to print a warning.  This
provides better diagnostic information via a nice debugobjects warning
instead of a simple WARN_ON(1) in the timer code with no information as to
what is wrong.  We also assign a dummy timer callback so that if the timer
is actually set to fire we don't oops.

Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Cc: Christine Chan <cschan@codeaurora.org>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>