The secondary bus number set code incorrectly overwrote the link
buffer settings in F0x[F4,D4,B4,94]. Constrain the secondary
bus number set to the appropriate bits of the registers.
Change-Id: If70825449f298aa66f7f8b76dbd7367455a6deb1
Signed-off-by: Timothy Pearson <tpearson@raptorengineeringinc.com>
Reviewed-on: https://review.coreboot.org/12068
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>
93107bebf6