Revert "Revert "msm: acpuclock-8x60: Optimize CPU voltages on 1.7GHz parts""

This reverts commit f3bd5d588abd7cd6fe058dd7e93949e6bbc5ac52.
Revert "Revert "msm: acpuclock: Fix error path in multicore targets""

This reverts commit e92a63b8612c3f47195525280aeec8835bd56459.