Replace platform_version_use_sound_trigger_hal with sound_trigger_hal_is_android_p

This is to facilitate making it a requirement for
soong_config_string_variables to only be set to one of
their possible values.

Bug: 220375749
Test: Presubmits
Change-Id: I3f718054f842dd196368ea4a03dc76157a21fa2d
1 file changed