[PATCH] fix spelling mistakes and clear up some wording.

While working on the DMA pool concept in the TTM code I re-read everything once more to make sure I was not missing anything. Whilst doing that I found some spelling mistakes and some wording that could be improved a bit. So fixed it up and please consider this patch for 3.1.

[PATCH] fix spelling mistakes and clear up some wording.

While working on the DMA pool concept in the TTM code I re-read everything once more to make sure I was not missing anything. Whilst doing that I found some spelling mistakes and some wording that could be improved a bit. So fixed it up and please consider this patch for 3.1. _