Patch from Lennert Buytenhek

Update the ixp2000 defconfigs from 2.6.12-git6 to 2.6.13-rc2.
Signed-off-by: NLennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>