6498206 Workaround for 4678671 in mkfs to support XMIT 2.1 controller

[prabahar.jeya...@sun.com]

Author: prabahar
Repository: /hg/onnv/onnv-gate
Revision: 86c2c3aeed9b9da8b33cb8a1b7942eb5141ab583
Log message:
6498206 Workaround for 4678671 in mkfs to support XMIT 2.1 controller

Files:
        update: usr/src/cmd/fs.d/ufs/mkfs/mkfs.c