soc/intel/fsp_broadwell_de: Use smm_module_loaderv2

Use smm_module_loaderv2 to support 16core/32thread Broadwell_DE.
Tested SMM handler loads on all 32 threads.

Change-Id: I3a6e17e8590a2af9b4e7c701f8fccfccfa3ea94b
Signed-off-by: Marc Jones <marcjones@sysproconsulting.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/50314
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Reviewed-by: Jay Talbott <JayTalbott@sysproconsulting.com>

src/soc/intel/fsp_broadwell_de/Kconfig

@@ -23,6 +23,7 @@ config CPU_SPECIFIC_OPTIONS
 	select SUPPORT_CPU_UCODE_IN_CBFS
 	select INTEL_DESCRIPTOR_MODE_CAPABLE
 	select HAVE_SMI_HANDLER
+	select X86_SMM_LOADER_VERSION2
 	select TSC_MONOTONIC_TIMER
 	select HAVE_FSP_BIN
 	select CPU_INTEL_FIRMWARE_INTERFACE_TABLE