PM: tracing: Hide device_pm_callback events under PM_SLEEP

The events device_pm_callback_start and device_pm_callback_end events are
only called when CONFIG_PM_SLEEP is defined. As each event can take up to
5K regardless if they are used or not, it's best not to define them when
they are not used. Add #ifdef around these events when they are not used.

Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Viresh Kumar <viresh.kumar@linaro.org>
Cc: Madhavan Srinivasan <maddy@linux.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/20250612145408.246703478@goodmis.org
Acked-by: Rafael J. Wysocki <rafael@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>

include/trace/events/power.h

@@ -212,6 +212,7 @@ TRACE_EVENT(cpu_frequency_limits,
 		  (unsigned long)__entry->cpu_id)
 );
 
+#ifdef CONFIG_PM_SLEEP
 TRACE_EVENT(device_pm_callback_start,
 
 	TP_PROTO(struct device *dev, const char *pm_ops, int event),
@@ -260,6 +261,7 @@ TRACE_EVENT(device_pm_callback_end,
 	TP_printk("%s %s, err=%d",
 		__get_str(driver), __get_str(device), __entry->error)
 );
+#endif
 
 TRACE_EVENT(suspend_resume,