Fix udelay() implementation for i945 romstage

Work around 32-bit overflow with 64-bit multiplication. Calculate
correct CPU frequency.

Change-Id: I86d78f2d70b9f9c62fd4e1e0d765e92e4de83f67
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: http://review.coreboot.org/1254
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
1 file changed