mb/asrock/b85m_pro4: Support LPC TPM

This mainboard has a 18-pin LPC header, where one can plug in a TPM.

Untested, as I don't have a TPM.

Change-Id: I14a159c373987d8b12fde18f327a9eb387c01de8
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/44182
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com>

src/mainboard/asrock/b85m_pro4/Kconfig

@@ -12,6 +12,7 @@ config BOARD_SPECIFIC_OPTIONS
 	select HAVE_OPTION_TABLE
 	select INTEL_GMA_HAVE_VBT
 	select MAINBOARD_HAS_LIBGFXINIT
+	select MAINBOARD_HAS_LPC_TPM
 	select MAINBOARD_USES_IFD_GBE_REGION
 	select NORTHBRIDGE_INTEL_HASWELL
 	select SERIRQ_CONTINUOUS_MODE

src/mainboard/asrock/b85m_pro4/devicetree.cb

@@ -103,6 +103,9 @@ chip northbridge/intel/haswell
 					device pnp 2e.16  off end	# Deep sleep
 					device pnp 2e.17  off end	# GPIOA
 				end
+				chip drivers/pc80/tpm
+					device pnp 4e.0 on end		# TPM
+				end
 			end
 			device pci 1f.2 on  end		# SATA (AHCI)
 			device pci 1f.3 on  end		# SMBus