input: Add option to disable touch booster

 * This can also be done from userspace, so allow disabling it.

Change-Id: I17f46abe89ed842d434307e90b7d2f8d4b6e1147
cm: Disable DVFS touch booster

 * We do this from userspace via boostpulse.

Change-Id: Ic1128c54779bf5c45c722f0f9e5610e8387aaa9f