libpayload: Enable vboot integration

This patch introduces building and linking of 3rdparty/vboot with
libpayload. VBoot can be enabled by setting CONFIG_LP_VBOOT_LIB.
Moreover it can be configured to use either TPM or TPM 2.0 mode,
and whether to use SHA256 processor extension instructions on x86.

Change-Id: I2d9d766a461edaa0081041c020ecf580fd2ca64e
Signed-off-by: Jakub Czapiga <jacz@semihalf.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/60080
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>

payloads/libpayload/vboot/Kconfig

@@ -0,0 +1,25 @@
+# SPDX-License-Identifier: BSD-3-Clause
+
+config VBOOT_LIB
+	bool "Compile verified boot (vboot) library"
+	default n
+	help
+	  This option enables compiling and building vboot libraries vboot_fw and tlcl.
+
+if VBOOT_LIB
+
+config VBOOT_TPM2_MODE
+	bool "TPM2 Mode"
+	default y
+	help
+	  This option enables TPM 2.0 support in vboot. Disabling it allows using TPM 1.2.
+
+config VBOOT_X86_SHA_EXT
+	bool "x86 SHA Extension"
+	default n
+	depends on ARCH_X86
+	help
+	  This option enables SHA256 implementation using x86 SHA processor extension
+	  instructions: sha256msg1, sha256msg2, sha256rnds2.
+
+endif