cxgb3 - bug fixes

Hi Jeff,

I'm submitting a set of bug fixes for inclusion in 2.6.21. The patches are built against Linus'git tree.

Here is a brief description:
- Ensure that the on-board TCAM's active region size is always greater than 16
- the driver now recognizes NIC only adapters
- tighten the MAC hang workaround
- bump up firmware version

Cheers,
Divy