[coreboot] [PATCH] fix dst-link field in RS780/RS690 function ProgK8TempMmioBase

[Liu Tao]

Hello,

in RS780/RS690 ProgK8TempMmioBase() function, the dst-link field is set to zero,
so for boards with RS780 not on CPU's HT chain 0, the function will
mis-configure
the MMIO dst-link routing, and the following enable_pcie_bar3()
function will hang
when it visits the MMIO.

the following patch fixes the problem, and tested on a K8 board with RS780 on HT
chain 1.

Signed-off-by: Liu Tao