Audio HAL VTS: debugDump can only test for crash

DebugDump does not return an error code, thus the implementation can not
return not implemented.

As a result, the test can not expect any output from the function.
Only test that the call does not crash and add a log if the function is
probably not implemented in the test.

Test: vts-tradefed run vts --module VtsHalAudioV2_0Target
Test: call/play music/record/video...
Bug: 36311550
Change-Id: I2c18958bceb1eb638491f9afce9d8e8025ccd3ec
Signed-off-by: Kevin Rocard <krocard@google.com>