DVD read chunking

Splits DVD reads up into smaller chunks so that data is available
before the final interrupt is triggered. This better simulates the DMA
that happens on a real device, which some games will take advantage of -
by either playing back data as it is loading or by using data that is
going to be overwritten shortly by an outstanding read.

Source/Core/Core/HW/DVDInterface.h

@@ -95,6 +95,7 @@ enum DIInterruptType : int
 
 enum class ReplyType : u32
 {
+  NoReply,
   Interrupt,
   IOS,
   DTK