PhoneProxy: Add a prop to enable always creating of CDMALTEPhone

Current Motorola OMAP4 devices need this in order to function properly
Will need to enable telephony.rilV7NeedsCDMALTEPhone prop on these devices

Author  Dan Pasanen<dan.pasanen@gmail.com>

Change-Id: I30747a8fd085640c21f6abdc0e86f44a2c6af921