ME: sceSysreg_driver's ME reset and clock calls, MMIO copies in sysclib

The calls homebrew starts the ME with (1.50's NIDs, and 3.71's for the
ME's reset and bus clock) set or clear a bit of the reset or bus clock
register the way the firmware's driver does, returning whether it was
set. Only those NIDs, so a later firmware's lowio.prx keeps its own
exports under --vsh.

Kernel modules copy their ME code to the boot page with SysclibForKernel's
memcpy, which now goes through MMIO for hardware addresses like the
replaced memcpy already did (MMIO::Copy, shared).

pspsdk's mebasic, MElib's test, PSP Bunny, snes9xTYL and ProTrekkr's test
now start their ME.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

Core/HLE/sceKernelInterrupt.cpp

@@ -31,6 +31,7 @@
 #include "Core/HLE/ErrorCodes.h"
 #include "Core/MIPS/MIPS.h"
 #include "Core/MIPS/MeCore.h"
+#include "Core/HW/MMIO.h"
 
 #include "Core/Debugger/MemBlockInfo.h"
 #include "Core/HLE/sceKernel.h"
@@ -812,8 +813,10 @@ const HLEFunction Kernel_Library[] =
 	{0X4AC57943, &WrapI_I<sceKernelRegisterExitCallback>,      "sceKernelRegisterExitCallback",       'i', "i"    },
 };
 
-static u32 sysclib_memcpy(u32 dst, u32 src, u32 size) {	
-	if (Memory::IsValidRange(dst, size) && Memory::IsValidRange(src, size)) {
+static u32 sysclib_memcpy(MIPSState *mips, u32 dst, u32 src, u32 size) {
+	if (MMIO::Copy(mips, dst, src, size)) {
+		// To or from hardware registers.
+	} else if (Memory::IsValidRange(dst, size) && Memory::IsValidRange(src, size)) {
 		memcpy(Memory::GetPointerWriteUnchecked(dst), Memory::GetPointerUnchecked(src), size);
 	}
 	if (MemBlockInfoDetailed(size)) {
@@ -957,8 +960,10 @@ static int sysclib_strncmp(u32 s1, u32 s2, u32 size) {
 	return hleLogError(Log::sceKernel, 0, "Bad addresses");
 }
 
-static u32 sysclib_memmove(u32 dst, u32 src, u32 size) {
-	if (Memory::IsValidRange(dst, size) && Memory::IsValidRange(src, size)) {
+static u32 sysclib_memmove(MIPSState *mips, u32 dst, u32 src, u32 size) {
+	if (MMIO::Copy(mips, dst, src, size)) {
+		// To or from hardware registers.
+	} else if (Memory::IsValidRange(dst, size) && Memory::IsValidRange(src, size)) {
 		memmove(Memory::GetPointerWriteUnchecked(dst), Memory::GetPointerUnchecked(src), size);
 	}
 	if (MemBlockInfoDetailed(size)) {