MFC r242462:

MFC r242462:
	10 years too late add support for "2.88MB 3.5in Extra High Density"
	floppies.

	Its unlikely that anyone actually uses these or cares about these
	anymore, since we support other floppy types and this change doesn't
	hurt - just add it.

PR:		conf/40777
Arrival-Date:	Fri Jul 19 08:50:02 PDT 2002
Approved by:	cperciva (implicit)

git-svn-id: svn://svn.freebsd.org/base/stable/8@242809 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f