Move TPM code out of chromeos

This code is not specific to ChromeOS and is useful outside of it.
Like with small modifications it can be used to disable TPM altogether.

Change-Id: I8c6baf0a1f7c67141f30101a132ea039b0d09819
Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
Reviewed-on: http://review.coreboot.org/10269
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>

src/vendorcode/google/chromeos/Kconfig

@@ -26,6 +26,8 @@ config CHROMEOS
 	bool "Build for ChromeOS"
 	default n
 	select TPM
+	select TPM_INIT_FAILURE_IS_FATAL
+	select SKIP_TPM_STARTUP_ON_NORMAL_BOOT
 	select BOOTMODE_STRAPS
 	select ELOG
 	help