ANDROID: timer: Export hrtimer_expire_entry/exit tracepoints

Export hrtimer_expire_entry/exit tracepoints, so that vendor modules
can register probes for these tracepoints.

Bug: 175936268
Change-Id: I739f369d3b56e09f8e9061fefdf25830e37e987e
Signed-off-by: Changki Kim <changki.kim@samsung.com>

kernel/time/timer.c

@@ -56,6 +56,9 @@
 #define CREATE_TRACE_POINTS
 #include <trace/events/timer.h>
 
+EXPORT_TRACEPOINT_SYMBOL_GPL(hrtimer_expire_entry);
+EXPORT_TRACEPOINT_SYMBOL_GPL(hrtimer_expire_exit);
+
 __visible u64 jiffies_64 __cacheline_aligned_in_smp = INITIAL_JIFFIES;
 
 EXPORT_SYMBOL(jiffies_64);