Add find file class to search for files

Scan a folder for a file based on file name. First scan the files
in the current path, then search real directories and finally
search symlinks in that order. Goal is to locate important sysfs
files for things like brightness, battery capacity, lun files, etc

This implementation just scans for the brightness file for the LCD

Change-Id: I8ed3e74a2e2851d58b443718b6e92b50a5491f08
diff --git a/find_file.hpp b/find_file.hpp
new file mode 100644
index 0000000..8833e9a
--- /dev/null
+++ b/find_file.hpp
@@ -0,0 +1,37 @@
+        Copyright 2014 TeamWin
+        This file is part of TWRP/TeamWin Recovery Project.
+        TWRP 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.
+        TWRP is distributed in the hope that it will be useful,
+        but WITHOUT ANY WARRANTY; without even the implied warranty of
+        GNU General Public License for more details.
+        You should have received a copy of the GNU General Public License
+        along with TWRP.  If not, see <>.
+#ifndef Find_File_HPP
+#define Find_File_HPP
+#include <string>
+#include <vector>
+using namespace std;
+class Find_File {
+	static string Find(const string& file_name, const string& start_path);
+	Find_File();
+	string Find_Internal(const string& filename, const string& starting_path);
+	vector<string> searched_dirs;