soc/amd/stoneyridge: Add ACPI MMIO enable function

In preparation for moving AGESA calls out of bootblock:
* Add definitions for needed registers in southbridge.h
* Add function to enable AMD FCH ACPI MMIO regions 0xfed80000 to
  0xfed81ffff.  Will be called by a later commit.

TEST=abuild, build Gardenia, build boot Grunt (with other changes
to call code not committed at this time)

Change-Id: If26efa6c6f5b562ba898e7d9da4827833310dc26
Signed-off-by: Garrett Kirkendall <>
Reviewed-by: Richard Spiegel <>
Reviewed-by: Martin Roth <>
Reviewed-by: Marshall Dawson <>
Reviewed-by: Aaron Durbin <>
Tested-by: build bot (Jenkins) <>
2 files changed