cxgbe(4): Improvements in TID management.

• Ignore any type of TID where the start/end values are not in the correct order. There are situations where the firmware isn't able to reserve room for the number requested in the config file but doesn't report a failure during configuration and instead sets end <= start.

• Track start/end in tid_tab and remove some redundant copies from adapter->params.

• Move all the start/end and other read-only parameters to a quiet part of tid_tab, away from the tid locks.

MFC after: 1 week
Sponsored by: Chelsio Communications