Revert "msm: acpuclock-krait: Disable vdd core boost"

This reverts commit aade74501be727bc9ccc6390a9cb3f0d842aa7ef.

Change-Id: Ied085672208da3d6c1fbbf18e5c1050cc7f1cc2a
Revert "msm: krait: add CPU Voltage control."

This reverts commit 86516ee2fe35ea60164a89a93f5721550c2b21a9.

Change-Id: Ia72c575f01dd95335a4fe96442171e3166c6f7d7