Indicate if call recording tone is supported when configuring phone accts.
When Telephony phone accounts are added, adding phone account extra to
indicate if the call recording tone is supported.
This is based on the carrier config, as well as a device overlay since
devices must support the specific telephony audio stream which is used.

Test: Manual, unit test
Bug: 64138141
Change-Id: I62d9883f9da81f5c9a4191e227d488fee1c9145e
2 files changed