broadwell_de_fsp: Select HAVE_INTEL_FIRMWARE

By selecting this switch in Kconfig one can build complete rom image
including descriptor and ME/TXE.

Change-Id: I7307695008df9a61baba1eb024f1f48be62c53c8
Signed-off-by: Werner Zeh <werner.zeh@siemens.com>
Reviewed-on: https://review.coreboot.org/14376
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>

src/soc/intel/fsp_broadwell_de/Kconfig

@@ -23,6 +23,7 @@ config CPU_SPECIFIC_OPTIONS
 	select SUPPORT_CPU_UCODE_IN_CBFS
 	# Microcode header files are delivered in FSP package
 	select USES_MICROCODE_HEADER_FILES if HAVE_FSP_BIN
+	select HAVE_INTEL_FIRMWARE
 
 config CBFS_SIZE
 	hex