siemens/mc_bdx1: Add usage of Siemens NC FPGA driver

Enable NC FPGA driver for this mainboard.

Change-Id: I87b6b10038f3d161a25b2008b7ea44b5627cca43
Signed-off-by: Werner Zeh <werner.zeh@siemens.com>
Reviewed-on: https://review.coreboot.org/15545
Tested-by: build bot (Jenkins)
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>

src/mainboard/siemens/mc_bdx1/Kconfig

@@ -11,6 +11,7 @@ config BOARD_SPECIFIC_OPTIONS
 	select CBFS_AUTOGEN_ATTRIBUTES
 	select USE_SIEMENS_HWILIB
 	select DRIVER_INTEL_I210
+	select DRIVER_SIEMENS_NC_FPGA
 
 config MAINBOARD_DIR
 	string