mb/dell/optiplex_9020: Add support for TPM1.2 device

These machines come with a TPM1.2 device by default. It is somewhat
obsolete these days, but there is no harm in enabling it.

Change-Id: Iec05321862aed58695c256b00494e5953219786d
Signed-off-by: Mate Kukri <kukri.mate@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/81827
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/mainboard/dell/optiplex_9020/Kconfig

@@ -12,7 +12,9 @@ config BOARD_SPECIFIC_OPTIONS
 	select INTEL_GMA_HAVE_VBT
 	select INTEL_INT15
 	select MAINBOARD_HAS_LIBGFXINIT
+	select MAINBOARD_HAS_TPM1
 	select MAINBOARD_USES_IFD_GBE_REGION
+	select MEMORY_MAPPED_TPM
 	select NORTHBRIDGE_INTEL_HASWELL
 	select SERIRQ_CONTINUOUS_MODE
 	select SOUTHBRIDGE_INTEL_LYNXPOINT

src/mainboard/dell/optiplex_9020/devicetree.cb

@@ -70,6 +70,9 @@ chip northbridge/intel/haswell
 					device pnp 2e.b  off end	# Floppy Controller
 					device pnp 2e.11 off end	# Parallel Port
 				end
+				chip drivers/pc80/tpm
+					device pnp 0c31.0 on end
+				end
 			end
 			device pci 1f.2 on  end				# SATA controller 1
 			device pci 1f.3 on  end				# SMBus