Merge changes I34fdcdb8,I951384c2,I34b4285f into msm-3.4

* changes:
  msm: rpm-regulator-smd: Add support for LDO bypass mode disable
  arm/dt: msm8974: Update the max corner limit for VDD_CX voltage regulator
  msm: rpm-regulator-smd: Update voltage corner mapping to match RPM