Merge from Widevine repo of http://go/wvgerrit/43202
Sync the definition of WidevinePssh data with the latest in support of
entitlement keys.
bug: 73297961 Fix or remove sublicense support.
Test: tested as part of http://go/ag/4674759
Change-Id: Ia9faf82732854a705b4b14430169ce4c8ecbcfcd