amd/family16kb: Move and resize the MMIO region

The Kabini MMIO region was assigned a 256MB region at
0xA0000000. That location is below TOP_MEM and is getting
carved out of useable system memory which is not being
reclaimed above 4GB. This changes its size to 64MB and
moves it to 0xF8000000.

This was tested on the hp/abm and asrock/imb-a180 boards.

Change-Id: Ib226bc954311a3a2a15f182ab4618f4924e95a5b
Signed-off-by: Dave Frodin <dave.frodin@se-eng.com>
Reviewed-on: http://review.coreboot.org/5945
Tested-by: build bot (Jenkins)
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
amd/hudson: Add the IOAPIC space to the fixed resources table

Without this change the IOAPIC memory window would collide
with PCI config space. This was tested on the hp/abm board.

Change-Id: I5dd53463961f75bab80a41dc7beff8d0434b24ae
Signed-off-by: Dave Frodin <dave.frodin@se-eng.com>
Reviewed-on: http://review.coreboot.org/5946
Tested-by: build bot (Jenkins)
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>