USB ID updates:

- LaCie Desktop Hard Drive
- Prolific PL2507 (unsupported)
- Seagate FreeAgent Go FW
- WD My Book Essential


git-svn-id: https://smartmontools.svn.sourceforge.net/svnroot/smartmontools/trunk@3077 4ea69e1a-61f1-4043-bf83-b5c94c648137