drivedb.h:
- Crucial/Micron M500/M510/M550 Client SSDs
- Micron M500DC Enterprise SSDs
Based on patch provided by Clayton Hawkings from Micron.

git-svn-id: https://svn.code.sf.net/p/smartmontools/code/trunk/smartmontools@3918 4ea69e1a-61f1-4043-bf83-b5c94c648137