lockstep_scheduler: inline get_absolute_time()

This is a small method that is used a lot.

platforms/posix/src/lockstep_scheduler/include/lockstep_scheduler/lockstep_scheduler.h

@@ -11,7 +11,7 @@ class LockstepScheduler
 {
 public:
 	void set_absolute_time(uint64_t time_us);
-	uint64_t get_absolute_time() const;
+	inline uint64_t get_absolute_time() const { return time_us_; }
 	int cond_timedwait(pthread_cond_t *cond, pthread_mutex_t *lock, uint64_t time_us);
 	int usleep_until(uint64_t timed_us);
 

platforms/posix/src/lockstep_scheduler/src/lockstep_scheduler.cpp

 #include "lockstep_scheduler/lockstep_scheduler.h"
 
 
-uint64_t LockstepScheduler::get_absolute_time() const
-{
-	return time_us_;
-}
-
 void LockstepScheduler::set_absolute_time(uint64_t time_us)
 {
 	time_us_ = time_us;