Overclock

Added CONFIG_MSM8960_CPU_OVERCLOCK
Bus is 533MHz
Minimum CPU frequency reduced to 192MHz
max. CPU frequencies are 2000MHz @ 1.3V for nominal and fast PVS, 1900MHz @ 1.35V for slow PVS
  - CPU voltages are a continuation based on stock values
  - slow pvs is one big screwup to overclock:
    qualcomm never used anything higher that 1.3V; custom kernels can be seen to use up to 1.35V