ANDROID: hrtimer: Export hrtimer_expire_entry/exit tracepoints

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

To debug hrtimer-related issue, hrtimer_expire_entry/exit can be
the core debugging data when hrtimer bug is included when panic
occurs in multiple cores at the same time.
And hrtimer_expire_entry/exit also check that hrtimer is operated normally or not.

Bug: 382155299
Change-Id: Ib960141e4af2c21f54efda3bd4b11644d48291ac
Signed-off-by: Donghyeok Choe <d7271.choe@samsung.com>

kernel/time/hrtimer.c

@@ -49,6 +49,9 @@
 
 #include "tick-internal.h"
 
+EXPORT_TRACEPOINT_SYMBOL_GPL(hrtimer_expire_entry);
+EXPORT_TRACEPOINT_SYMBOL_GPL(hrtimer_expire_exit);
+
 /*
  * Masks for selecting the soft and hard context timers from
  * cpu_base->active