canCfg - Configure CAN interface

Configure the PLT CAN interface speed.

Usage:

- command: canCfg <port> <bitrate>
  [retry: <retryCount>]

Argument	Description
port	PLT CAN interface; currently only CAN0 is available.
bitrate	CAN bit rate, in bits per second.
retryCount	Number of times to retry the test step (optional)