M4A785T-M: fix TOM2.

M4A785T-M: fix TOM2.

This commit is based on the commit 94fa3db36688e8db133aebe14d480b0c4722e4c9
(AMD Mahogany Fam10 ACPI table fixes.)

With commit permit to boot without pci=nocrs on the M4A785T-M board.

Before the fix dmesg contained the following:
  [    0.452071] ACPI Error: [TOM2] Namespace lookup failure, AE_NOT_FOUND
  (20110112/psargs-359)
  [    0.480085] ACPI Error: [TOM2] Namespace lookup failure, AE_NOT_FOUND
  (20110112/psargs-359)
  [    0.788222] ACPI Error: [TOM2] Namespace lookup failure, AE_NOT_FOUND
  (20110112/psargs-359)

Now it only contains:
  [    0.312102] TOM: 0000000080000000 aka 2048M

Change-Id: I5d517604abe938af19b70d57d92c1f973114c1cd
Signed-off-by: Denis 'GNUtoo' Carikli <GNUtoo@no-log.org>
Reviewed-on: http://review.coreboot.org/635
Tested-by: build bot (Jenkins)
Reviewed-by: Kerry Sheh <shekairui@gmail.com>
Reviewed-by: Marc Jones <marcj303@gmail.com>