[coreboot] mcp55_fadt patch to fix Microsoft Windows BSOD 0x000000A5 (0x00000011, 0x00000006 ....)

[David Robinson]

Hi,

The attached patch fixes a problem preventing Windows XP / 7 from booting
with bug check error A5 (0x00000011, 0x00000006) on the Gigabyte GA-M57SLI-
S4 board. Microsoft documentation states that this bug check occurs because,
"SCI_EN never becomes set in PM1 Control Register". This patch sets the
SCI_EN bit. The patch applies to any board featuring the MCP55 south bridge.

Signed-off-by: David Robinson

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