MTK在设置/显示下增加永不休眠选项

一、首先在资源文件中加入选项

       在package/app/Settings/res/values/arrays.xml文件中加入永不休眠选项

<!-- Display settings.  The delay in inactivity before the screen is turned off. These are shown in a list dialog. -->
<string-array name="screen_timeout_entries">
        <item>15 seconds</item>
        <item>30 seconds</item>
        <item>1 minute</item>
        <item>2 minutes</item>
        <item>5 minutes</item>
        <item>10 minutes</item>
        <item>30 minutes</item>
<item>Never</item> <!--add code --></span>
</string-array>

<string-array name="screen_timeout_values" translatable="false">
        <!-- Do not translate. -->
        <item>15000</item>
        <!-- Do not