siemens/mc_apl5: Enable TPM support

This patch enables TPM on SPI and adds the needed devicetree entry for
mc_apl5.

TEST=Build coreboot for mc_apl5 board and check the TPM console output.
In addition the TPM was correctly verified by our Linux driver.

Change-Id: Iafc967c7a2bfee9bdb9b6591d12328620e2887cc
Signed-off-by: Mario Scheithauer <mario.scheithauer@siemens.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/33173
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-by: Werner Zeh <werner.zeh@siemens.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/mainboard/siemens/mc_apl1/variants/mc_apl5/Kconfig

@@ -8,5 +8,8 @@ config BOARD_SPECIFIC_OPTIONS
 	select DRIVER_SIEMENS_NC_FPGA
 	select NC_FPGA_NOTIFY_CB_READY
 	select APL_SKIP_SET_POWER_LIMITS
+	select MAINBOARD_HAS_TPM2
+	select MAINBOARD_HAS_LPC_TPM
+	select TPM_ON_FAST_SPI
 
 endif # BOARD_SIEMENS_MC_APL5

src/mainboard/siemens/mc_apl1/variants/mc_apl5/devicetree.cb

@@ -104,7 +104,11 @@ chip soc/intel/apollolake
 		device pci 1c.0 on  end	# - eMMC
 		device pci 1d.0 off end	# - UFS
 		device pci 1e.0 off end	# - SDIO
-		device pci 1f.0 on  end	# - LPC
+		device pci 1f.0 on  	# - LPC
+			chip drivers/pc80/tpm
+				device pnp 0c31.0 on end
+			end
+		end
 		device pci 1f.1 on  end	# - SMBUS
 	end
 end

src/mainboard/siemens/mc_apl1/variants/mc_apl5/gpio.c

@@ -254,7 +254,7 @@ static const struct pad_config gpio_table[] = {
 	/* SIO_SPI_0 -- unused */
 	PAD_CFG_GPI(GPIO_104, DN_20K, DEEP),		/* GP_SSP_0_CLK */
 	PAD_CFG_GPI(GPIO_105, DN_20K, DEEP),		/* GP_SSP_0_FS0 */
-	PAD_CFG_GPI(GPIO_106, UP_20K, DEEP),		/* GP_SSP_0_FS1 */
+	PAD_CFG_NF(GPIO_106, NATIVE, DEEP, NF3),	/* FST_SPI_CS2_N */
 	PAD_CFG_GPI(GPIO_109, DN_20K, DEEP),		/* GP_SSP_0_RXD */
 	PAD_CFG_GPI(GPIO_110, DN_20K, DEEP),		/* GP_SSP_0_TXD */