Add Kconfig TPM

Defined as TPM1 || TPM2.

Change-Id: I18c26d6991c2ccf782a515a8e90a3eb82b53b0e6
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/54853
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>

src/security/tpm/Kconfig

@@ -21,6 +21,11 @@ config TPM2
 		   MAINBOARD_HAS_SPI_TPM || \
 		   MAINBOARD_HAS_CRB_TPM
 
+config TPM
+	bool
+	default y
+	depends on TPM1 || TPM2
+
 config MAINBOARD_HAS_TPM1
 	bool
 

src/security/vboot/tpm_common.h

@@ -1,6 +1,6 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 
-#if CONFIG(TPM1) || CONFIG(TPM2)
+#if CONFIG(TPM)
 
 /* Start of the root of trust */
 uint32_t vboot_setup_tpm(struct vb2_context *ctx);