ppc4xx: Make DDR2 timing for intip more robust

DDR2 timing for intip was on the edge for some of the available chips
for this board. Now it is verfied to work with all of them.

Signed-off-by: Dirk Eibach <eibach@gdsys.de>
Signed-off-by: Stefan Roese <sr@denx.de>
1 file changed