src/mainboard/pcengines/apu1: Enable LPC TPM

PC Engines apu1 has a 20 pin LPC header that allows connection of
external TPM module.

Add necessary Kconfig option and devicetree entry for TPM.

Change-Id: Ic9f3d41c6e8346a12553386b9c00de6b8fd21abd
Signed-off-by: Michał Żygowski <michal.zygowski@3mdeb.com>
Reviewed-on: https://review.coreboot.org/c/30354
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/mainboard/pcengines/apu1/Kconfig

@@ -31,6 +31,7 @@ config BOARD_SPECIFIC_OPTIONS
 	select BOARD_ROMSIZE_KB_2048
 	select GENERIC_SPD_BIN
 	select SEABIOS_ADD_SERCON_PORT_FILE if PAYLOAD_SEABIOS
+	select MAINBOARD_HAS_LPC_TPM
 
 config MAINBOARD_DIR
 	string

src/mainboard/pcengines/apu1/devicetree.cb

@@ -70,6 +70,9 @@ chip northbridge/amd/agesa/family14/root_complex
 					device pnp 2e.607 off end
 					device pnp 2e.e off end
 				end
+				chip drivers/pc80/tpm
+					device pnp 0c31.0 on end
+				end # LPC TPM
 			end #LPC
 			device pci 14.4 on end # PCIB 0x4384 always active; pins remapped to gpio by disconnect_pcib = 1
 			device pci 14.5 off end # OHCI FS/LS USB