Staging: olpc_dcon: mark the driver as CONFIG_BROKEN for now

It doesn't build yet, as it depends on some changes that are not yet
in the tree, so mark it as BROKEN for now until that gets resolved.

Reported-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Andres Salomon <dilinger@queued.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>