This change attempts to make calls to WII_IPC_HLE_Interface::Update()
more consistent. We should be calling it whenever there is something we
can pop from a queue, and this patch does that.
DeviceUpdate() now works independently of Update(): it's now just a periodic
timer for devices which need to regularly update state.
With this change, we need a non-zero default delay for IPC replies because
replies are popped off the queue much more aggressively.
This fixes launching channels from the the System Menu.
VI isn't called as regular as we want to, so we have to create a new throttling event called regularly by coretiming.
Atm we throttle every 1 ms when we are too fast and skip throttling when we lack 40ms (to avoid fast boosts after slowdowns)
