Share commo DMA related code for use with SPU

src/Library/internal-include/SPU/spu_internal.hpp

@@ -5,7 +5,7 @@
 namespace JabyEngine {
     namespace SPU {
         namespace internal {
-            namespace DMA {
+            struct DMA {
                 static void wait() {
                     DMA_IO::SPU.wait();
                 }
@@ -14,7 +14,7 @@ namespace JabyEngine {
                     SPU_IO::ControlRegister.set_transfer_mode(SPU_IO::ControlRegister::Stop);
                 }
 
-                namespace Receive {
+                struct Receive {
                     static void prepare() {
                         SPU_IO::DataTransferControl.write(SPU_IO::DataTransferControl::NormalTransferMode());
                         SPU_IO::ControlRegister.set_transfer_mode(SPU_IO::ControlRegister::Stop);
@@ -36,8 +36,8 @@ namespace JabyEngine {
                         DMA_IO::SPU.block_ctrl.write(DMA_IO::BCR::from(SyncMode1::BlockSize.with(wordsPerBlock), SyncMode1::BlockAmount.with(blockCount)));
                         DMA_IO::SPU.channel_ctrl.write(DMA_IO::CHCHR::StartSPUReceive());
                     }
-                }
-            }
+                };
+            };
         }
     }
 }