Use ctrulib functions for mcu/battery level

sysmodules/rosalina/include/mcu.h

@@ -1,37 +0,0 @@
-/*
-*   This file is part of Luma3DS
-*   Copyright (C) 2016-2017 Aurora Wright, TuxSH
-*
-*   This program is free software: you can redistribute it and/or modify
-*   it under the terms of the GNU General Public License as published by
-*   the Free Software Foundation, either version 3 of the License, or
-*   (at your option) any later version.
-*
-*   This program is distributed in the hope that it will be useful,
-*   but WITHOUT ANY WARRANTY; without even the implied warranty of
-*   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-*   GNU General Public License for more details.
-*
-*   You should have received a copy of the GNU General Public License
-*   along with this program.  If not, see <http://www.gnu.org/licenses/>.
-*
-*   Additional Terms 7.b and 7.c of GPLv3 apply to this file:
-*       * Requiring preservation of specified reasonable legal notices or
-*         author attributions in that material or in the Appropriate Legal
-*         Notices displayed by works containing it.
-*       * Prohibiting misrepresentation of the origin of that material,
-*         or requiring that modified versions of such material be marked in
-*         reasonable ways as different from the original version.
-*/
-
-#pragma once
-
-#include <3ds.h>
-
-Handle mcuhwcHandle;
-
-Result mcuInit(void);
-Result mcuExit(void);
-Result mcuReadRegister(u8 reg, u8* data, u32 size);
-Result mcuWriteRegister(u8 reg, u8* data, u32 size);
-Result mcuGetLEDState(u8* out);