The code in rs690 or rs780 is always used with K8 or AMDFAM10
northbridge. Without GFXUMA, both of these set the same static value
indirectly using the variable uma_memory_base.
Make the register setting with immediate value, to remove the obscure
use of variable uma_memory_base.
Change-Id: I5354684457a76e73013b4e34a4538a6d122eee8d
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/1246
Reviewed-by: Zheng Bao <zheng.bao@amd.com>
Tested-by: build bot (Jenkins)
Reviewed-by: Anton Kochkov <anton.kochkov@gmail.com>