Add ISDB-T Multi-Layer Support.

Because ISDB-T has up to three layers
(1) It is necessary to be able to obtain the hierarchical structure and
information of each hierarchy by getFrontendStatus. Various transmission
parameters, partial reception flags, error states at each level, etc.
(2) It is necessary to be able to set the transmission parameters of
each layer at the time of request. Various transmission parameters and
partial reception flags.

android.Manifest.permission.ACCESS_TV_TUNER is the overall control to
the tuner resources, it's already checked before querying frontend
status.

Bug: 171537116
Test: atest android.media.tv.tuner.cts on AIDL and HAL HALs.
Change-Id: I0d5a6056a09de5509be0a45cac435da4a43ab55f