Phanbell: Explicitly set buck voltages in SPL * Bucks 1-4 will be reconfigured via DVS in the kernel. * Buck 5 is explicitly set to 1.0V * Regulator lock/unlock is added, this ensures that in warm or cold reset the values will be set. Change-Id: I8d8be74bddbbd081030fe1762b9f9c6534c7fb77