Add support for ST M25P80 chips

Detection was tested. Print status register before erase to help
debugging block locks.

Corresponding to flashrom svn r164 and coreboot v2 svn r3008.

Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Acked-by: Corey Osgood <corey.osgood@gmail.com>
3 files changed