wiimote: correct max wiimotes, wii has a maximum of 6 channels

maximums is a hardware 4 on wii, 6 on wii mini because it uses the same BT module as Wiiu. on top of that the config has spots for 6 devices too.

Author: DacoTaco

gc/wiiuse/wpad.h

@@ -43,6 +43,7 @@ enum {
 	WPAD_CHAN_2,
 	WPAD_CHAN_3,
 	WPAD_BALANCE_BOARD,
+	WPAD_CHAN_UNKNOWN,
 	WPAD_MAX_DEVICES,
 };
 

wiiuse/io_wii.c

@@ -13,7 +13,7 @@
 #include "io.h"
 
 #define MAX_COMMANDS					0x100
-#define MAX_WIIMOTES					5
+#define MAX_WIIMOTES					6
 
 static vu32* const _ipcReg = (u32*)0xCD000000;
 static u8 *__queue_buffer[MAX_WIIMOTES] = { 0, 0, 0, 0, 0 };