Revised channel access from EXI_DeviceMemoryCard

Source/Core/Core/HW/EXI.cpp

@@ -97,6 +97,11 @@ void ChangeDevice(const u8 channel, const TEXIDevices device_type, const u8 devi
 	CoreTiming::ScheduleEvent_Threadsafe(500000000, changeDevice, ((u64)channel << 32) | ((u64)device_type << 16) | device_num);
 }
 
+CEXIChannel* GetChannel(u32 index)
+{
+	return g_Channels[index];
+}
+
 IEXIDevice* FindDevice(TEXIDevices device_type, int customIndex)
 {
 	for (auto& channel : g_Channels)