sceMpegbase: init and shut down from the kernel, like everything else

__MpegBaseInit was called by __MpegInit rather than by __KernelInit, and
__MpegBaseShutdown had just been added the same way. Every other module is
started and stopped directly by the kernel - __MpegBaseDoState already was -
so do the same here and let sceMpeg.cpp mind only its own state.

The order is unchanged: __MpegBaseInit ran first inside __MpegInit and now sits
just before it, __MpegBaseShutdown ran last and now sits just after.

Co-Authored-By: Claude Opus 5 (1M context) <[email protected]>

Core/HLE/sceKernel.cpp

@@ -144,6 +144,7 @@ void __KernelInit()
 	__PowerInit();
 	__UtilityInit();
 	__UmdInit();
+	__MpegBaseInit();
 	__MpegInit();
 	__PsmfInit();
 	__CtrlInit();
@@ -210,6 +211,7 @@ void __KernelShutdown()
 
 	__Mp3Shutdown();
 	__MpegShutdown();
+	__MpegBaseShutdown();
 	__PsmfShutdown();
 	__PPGeShutdown();
 

Core/HLE/sceMpeg.cpp

@@ -356,7 +356,6 @@ static void ClearMpegContexts() {
 }
 
 void __MpegInit() {
-	__MpegBaseInit();
 	// getMpegCtx keys on a handle read out of game memory, so don't leave contexts from a previous
 	// game around for the next one to find.
 	ClearMpegContexts();
@@ -414,7 +413,6 @@ void __MpegDoState(PointerWrap &p) {
 
 void __MpegShutdown() {
 	ClearMpegContexts();
-	__MpegBaseShutdown();
 }
 
 void __MpegLoadModule(int version,u32 crc) {

Core/HLE/sceMpegbase.h

@@ -25,7 +25,7 @@ class PointerWrap;
 
 void Register_sceMpegbase();
 
-// Called per boot, from __MpegInit and __MpegShutdown.
+// Called per boot, from __KernelInit and __KernelShutdown, around sceMpeg's own pair.
 void __MpegBaseInit();
 void __MpegBaseShutdown();