enableHPF flips wrong bit

I noticed that the enableHPF() wasn't working, and after playing with it I realized that it was setting the wrong bit (<<5 flips the wrong bit). It should be:
`if (enable) 
  {
    data |= 1 << 4; 
  }
  else
  {
    data &= ~(1 << 4);
  }
`

 to set the FDS bit in CTRL_REG2