HW/DVDInterface: Refactor to class.

Source/Core/Core/Boot/Boot.cpp

@@ -317,7 +317,7 @@ static const DiscIO::VolumeDisc* SetDisc(std::unique_ptr<DiscIO::VolumeDisc> dis
                                          std::vector<std::string> auto_disc_change_paths = {})
 {
   const DiscIO::VolumeDisc* pointer = disc.get();
-  DVDInterface::SetDisc(std::move(disc), auto_disc_change_paths);
+  Core::System::GetInstance().GetDVDInterface().SetDisc(std::move(disc), auto_disc_change_paths);
   return pointer;
 }
 
@@ -344,7 +344,7 @@ bool CBoot::DVDReadDiscID(Core::System& system, const DiscIO::VolumeDisc& disc,
 
   // Transition out of the DiscIdNotRead state (which the drive should be in at this point,
   // on the assumption that this is only used for the first read)
-  DVDInterface::SetDriveState(DVDInterface::DriveState::ReadyNoReadsMade);
+  system.GetDVDInterface().SetDriveState(DVDInterface::DriveState::ReadyNoReadsMade);
   return true;
 }
 

Source/Core/Core/Boot/Boot_BS2Emu.cpp

@@ -295,11 +295,11 @@ bool CBoot::EmulatedBS2_GC(Core::System& system, const Core::CPUThreadGuard& gua
     // No known game uses a size other than the default.
     if (streaming_size == 0)
       streaming_size = 10;
-    DVDInterface::AudioBufferConfig(true, streaming_size);
+    system.GetDVDInterface().AudioBufferConfig(true, streaming_size);
   }
   else
   {
-    DVDInterface::AudioBufferConfig(false, 0);
+    system.GetDVDInterface().AudioBufferConfig(false, 0);
   }
 
   const bool ntsc = DiscIO::IsNTSC(SConfig::GetInstance().m_region);