Add DTMB Frontend Type, Settings and Capabilities.

DTMB is only supported in Tuner HAL 1.1 or higher.
Tuner framework does version check to make sure enought support from HAL
implementation.

Tuner.tune and Tuner.scan with DTMB settings running on Tuner HAL 1.0
implementation would be no-op.

Test: atest android.media.tv.tuner.cts
Bug: 159064654
Change-Id: Ic2f759cc92fee75ae94b72e233fd6c4448359a67