Rework PMW3901 calibration parameters.
Rework PMW3901 calibration parameters.

Uses timing/calibration parameters from github PX4/PX4-Autopilot\
/blob/master/src/drivers/optical_flow/pmw3901/PMW3901.cpp.

  * components/src/motion/pmw3901/pmw3901.adb (Initialize): delays to
      match PX4 code.
    (Calibrate): likewise, plus calibration data.

AdaCore/Ada_Drivers_Library,AdaCore/Ada_Drivers_Library,simonjwright/Ada_Drivers_Library,simonjwright/Ada_Drivers_Library