Fix bugs in the Tuner HAL 1.0 VTS

The previous implementation did not check some of the
Descrambler API test results to stop the test.
And the test itself was also implemented in a wrong way.

Test: atest VtsHalTvTunerV1_0TargetTest
Bug: 150987138
Change-Id: Ie26db0ec1b231062d0314631eebec319382da1bc
(cherry picked from commit 6d774c89)