Default [Q] File android.hardware.telephony.gsm.xml not present

Guys,

I am trying to enable voice calling support on my tab, i rooted it and enable capabale_voice=true in framework-res.apk, now phone app visible but its FC when i try to make calls, and also unable to receive any calls, after scanning /system i come to know that file = android.hardware.telephony.gsm.xml is not present in /system/etc/permissions dir, can i manually create this file ? the contents of file are below.

<permissions>
<feature name="android.hardware.telephony"/>
<feature name="android.hardware.telephony.gsm"/>
</permissions>

Plesase suggest