Patch merged into coreboot/master: amd/pi: Make BottomIo position configurable

the following patch was just integrated into master:
commit a132892de696d011e61cea2828c0e4c93fc3b3aa
Author: Ricardo Ribalda Delgado 
Date:   Wed Dec 28 15:16:22 2016 +0100

amd/pi: Make BottomIo position configurable

Some PCI peripherals, such as FPGA accelerators, require a great amount
    of memory mapped IO. This patch allows the user to select at build time
    the bottom IO to leave enough space for such devices.

We cannot calculate this value at runtime because it has to be set
    before the PCI devices are enumerated.

Change-Id: Ic590e8aa8b91ff89877cbff6afd10614d33dcf8d
    Credit-to: Kyösti Mälkki 
    Signed-off-by: Ricardo Ribalda Delgado 
    Reviewed-on: https://review.coreboot.org/17980
    Tested-by: build bot (Jenkins)
    Reviewed-by: Paul Menzel 
    Reviewed-by: Marshall Dawson

See https://review.coreboot.org/17980 for details.

-gerrit