GetDtmb Settings and Capabilities in Tuner JNI

DTMB is a new frontend type added in Tuner 1.1
Tuner java Framework and Tuner JNI are changed to
handle the new DTMB Settings and Capabilites

Test: atest android.media.tv.tuner.cts
Bug: 159064654
Change-Id: I25209eb4da4f6790765299c95442f6363ef4cf31