Kernel: Move reschedules from SVCs to actual mechanisms that reschedule.

src/core/hle/kernel/timer.cpp

@@ -52,10 +52,14 @@ void Timer::Set(s64 initial, s64 interval) {
     u64 initial_microseconds = initial / 1000;
     CoreTiming::ScheduleEvent(usToCycles(initial_microseconds),
             timer_callback_event_type, callback_handle);
+
+    HLE::Reschedule(__func__);
 }
 
 void Timer::Cancel() {
     CoreTiming::UnscheduleEvent(timer_callback_event_type, callback_handle);
+
+    HLE::Reschedule(__func__);
 }
 
 void Timer::Clear() {