TimerEvent: Use ticker_insert_event_us instead of the old API in

pan- · pan- · commit f52da48d9521 · 2017-05-31T19:14:21.000+01:00
insert_absolute.

With this patch, event insertion should be more precise.
diff --git a/drivers/TimerEvent.cpp b/drivers/TimerEvent.cpp
@@ -45,7 +45,7 @@ void TimerEvent::insert(timestamp_t timestamp) {
 }
 
 void TimerEvent::insert_absolute(us_timestamp_t timestamp) {
-    ticker_insert_event(_ticker_data, &event, timestamp, (uint32_t)this);
+    ticker_insert_event_us(_ticker_data, &event, timestamp, (uint32_t)this);
 }
 
 void TimerEvent::remove() {

Original file line number	Diff line number	Diff line change
`@@ -45,7 +45,7 @@ void TimerEvent::insert(timestamp_t timestamp) {`
`45`	`45`	`}`
`46`	`46`
`47`	`47`	`void TimerEvent::insert_absolute(us_timestamp_t timestamp) {`
`48`		`- ticker_insert_event(_ticker_data, &event, timestamp, (uint32_t)this);`
	`48`	`+ ticker_insert_event_us(_ticker_data, &event, timestamp, (uint32_t)this);`
`49`	`49`	`}`
`50`	`50`
`51`	`51`	`void TimerEvent::remove() {`