Add isDataEnabled in PhoneInterfaceManager.

Add new API isDataEnabled in PhoneInterfaceManager and
rename the existing ones from getDataEnabled to isUserDataEnabled
and setDataEnabled to setUserDataEnabled.

Bug: 69814555
Test: build
Change-Id: I510f4992e9f0e6f4c81a74649bbf07df94b05958
Merged-In: I510f4992e9f0e6f4c81a74649bbf07df94b05958
1 file changed