Add support for Eon EN29LV040 and EN29LV040A.

Both use the same ID and are mostly identical.

Tested-by: Denis 'GNUtoo' Carikli <GNUtoo@no-log.org>
Signed-off-by: Denis 'GNUtoo' Carikli <GNUtoo@no-log.org>
Acked-by: Stefan Tauner <stefan.tauner@alumni.tuwien.ac.at>

git-svn-id: svn://flashrom.org/flashrom/trunk@1857 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1