mainboard/asus/am1i-a: turn on the tpm

Along with other patches submitted for review to get the chipset
parts working, this allows Linux or other OS to use a TPM module
plugged into the 20-pin LPC header on the board, by exposing its
presence through the ACPI and PNP tables.

This patch adds to the Kconfig and devicetree.cb files.

Tested with the TPM/FW 3.19 and the trousers tools.

Change-Id: I8c1aea245f81fa44a6bdd5301bbee958cbcdfaaa
Signed-off-by: Kevin Cody-Little <kcodyjr@gmail.com>
Reviewed-on: https://review.coreboot.org/26193
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>

src/mainboard/asus/am1i-a/Kconfig

@@ -16,6 +16,7 @@ config BOARD_SPECIFIC_OPTIONS
 	select NORTHBRIDGE_AMD_AGESA_FAMILY16_KB
 	select SOUTHBRIDGE_AMD_AGESA_YANGTZE
 	select SUPERIO_ITE_IT8623E
+	select MAINBOARD_HAS_LPC_TPM
 
 config MAINBOARD_DIR
 	string

src/mainboard/asus/am1i-a/devicetree.cb

@@ -85,6 +85,9 @@ chip northbridge/amd/agesa/family16kb/root_complex
 							io 0x62 = 0x300
 						end
 					end	#superio/ite/it8623e
+					chip drivers/pc80/tpm
+						device pnp 4e.0 on end		# TPM module
+					end
 				end	#device pci 14.3 # LPC
 				device pci 14.7 off  end # SD - no card reader present
 			end	#chip southbridge/amd/agesa/hudson