drivers/net/at91_emac.c: increase timeout for autonegotiation

This patch increases timeout for autonegotiation from 1 second to 3 seconds.
Some boards (e.g. at91rm9200ek) did not negotiate within 1 second.

Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com>
Signed-off-by: Ben Warren <biggerbadderben@gmail.com>
1 file changed