Mention ds1225y support.

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2462 c046a42c-6fe2-441c-8c8c-71466251a162

Changelog

   - TFTP booting from host directory (Anthony Liguori, Erwan Velu)
   - Tap device emulation for Solaris (Sittichai Palanisong)
   - Monitor multiplexing to several I/O channels (Jason Wessel)
+  - ds1225y nvram support (Herve Poussineau)
 
 version 0.9.0: