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/mainboard/intel/baskingridge/Kconfig

@@ -11,6 +11,7 @@ config BOARD_SPECIFIC_OPTIONS # dummy
 	select HAVE_ACPI_RESUME
 	select HAVE_SMI_HANDLER
 	select MAINBOARD_HAS_CHROMEOS
+	select MAINBOARD_HAS_LPC_TPM
 	select INTEL_INT15
 	select CHROMEOS_VBNV_CMOS