Expose TelephonyManager#{set,get}DataEnabled.

setDataEnabled requires MODIFY_PHONE_STATE or carrier privileges.
getDataEnabled will work with any of the above or
ACCESS_NETWORK_STATE.

Test: Exercised APIs from test app, updated and executed CTS tests
Change-Id: I2d5a9df2e55f3f7be1729abefe137c00ae1d6c4e
Fixes: 32644451
3 files changed