Update base.php

This breaks the ability to provision Yealink T28 phones as their common cfg file is y000000000000.cfg.
Create base.php
Create brand_data.json
Create $mac.cfg
Create $mac.xml
Create dialnow_22.json
Create ext38.json
Delete $mac.cfg
Delete $mac.xml
Delete dialnow_22.json
Create $mac.cfg
Create $mac.xml
Create dialnow_22.json
Create family_data.json
Create hard_keys.json
Create line_keys_20.json
Create line_keys_22.json
Create line_keys_28.json
Create memory_keys_22.json
Create phone.php