tc400: Fix expected turbo response to 'unready_turbo'

[mjrand]

Description

Changed the expected response of the turbo in the unready_turbo driver call.

Motivation and Context

When the turbo receives the unready_turbo command it response with a PFEIFFER_FALSE (000000) and not a PFEIFFER_TRUE (111111). We assumed it would respond the opposite, so our check of if the function succeeded always incorrectly returned a failed state. We fixed this for the turn_turbo_off command but forgot this call.

How Has This Been Tested?

This specifically was not tested but the turn_turbo_off fix was tested. Indeed when I looked at the agent logs I see that the "setting ready state failed` now instead of the turn off failure.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.

[BrianJKoopman]

Looks good, thanks for the PR!