audio_renderer: Pass command buffer by const reference

This is just being copied and isn't modified at all.

src/audio_core/renderer/adsp/adsp.cpp

@@ -50,7 +50,7 @@ u32 ADSP::GetRemainCommandCount(const u32 session_id) const {
     return render_mailbox.GetRemainCommandCount(session_id);
 }
 
-void ADSP::SendCommandBuffer(const u32 session_id, CommandBuffer& command_buffer) {
+void ADSP::SendCommandBuffer(const u32 session_id, const CommandBuffer& command_buffer) {
     render_mailbox.SetCommandBuffer(session_id, command_buffer);
 }
 

src/audio_core/renderer/adsp/adsp.h

@@ -131,7 +131,7 @@ public:
      * @param session_id     - The session id to check (0 or 1).
      * @param command_buffer - The command buffer to process.
      */
-    void SendCommandBuffer(u32 session_id, CommandBuffer& command_buffer);
+    void SendCommandBuffer(u32 session_id, const CommandBuffer& command_buffer);
 
     /**
      * Clear the command buffers (does not clear the time taken or the remaining command count)

src/audio_core/renderer/adsp/audio_renderer.cpp

@@ -51,7 +51,7 @@ CommandBuffer& AudioRenderer_Mailbox::GetCommandBuffer(const s32 session_id) {
     return command_buffers[session_id];
 }
 
-void AudioRenderer_Mailbox::SetCommandBuffer(const u32 session_id, CommandBuffer& buffer) {
+void AudioRenderer_Mailbox::SetCommandBuffer(const u32 session_id, const CommandBuffer& buffer) {
     command_buffers[session_id] = buffer;
 }
 

src/audio_core/renderer/adsp/audio_renderer.h

@@ -91,7 +91,7 @@ public:
      * @param session_id - The session id to get (0 or 1).
      * @param buffer     - The command buffer to set.
      */
-    void SetCommandBuffer(u32 session_id, CommandBuffer& buffer);
+    void SetCommandBuffer(u32 session_id, const CommandBuffer& buffer);
 
     /**
      * Get the total render time taken for the last command lists sent.