Staging: DST: fix build dependancy

On Mon, Jan 19, 2009 at 10:12:24AM -0800, Randy Dunlap (randy.dunlap@oracle.com) wrote:
> 
> DST build fails when CONFIG_BLOCK=n:

DST should depend on block and block device, in the original patch its
kconfig entry was in the BLK_DEV menu, so this dependency was satisfied
automatically. Should attached patch be pushed into drivers/staging?

Reported-by: Randy Dunlap <randy.dunlap@oracle.com>
Acked-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Evgeniy Polyakov <zbr@ioremap.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>