FP3: Disable proprietary DTS parser

The proprietary parser has security issues and won't receive updates
anymore on the msm8953 platform. Unset bit 6 of the bitmask to disable
it and drop DTS support.

Issue: FP3SEC-405
Issue: FP3-A11#435
Change-Id: I5eb69d99b8fd50adef3d1dc176afd93e03c7ddb1