soc/sifive/fu540: Add chip_operations stub

Change-Id: If06695745bb72f883314e5514c616223b0210a2f
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/41716
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Rudolph <siro@das-labor.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Philipp Hug <philipp@hug.cx>

src/soc/sifive/fu540/Makefile.inc

@@ -23,6 +23,7 @@ ramstage-y += sdram.c
 ramstage-y += cbmem.c
 ramstage-y += otp.c
 ramstage-y += clock.c
+ramstage-y += chip.c
 
 CPPFLAGS_common += -Isrc/soc/sifive/fu540/include
 

src/soc/sifive/fu540/chip.c

@@ -0,0 +1,7 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <device/device.h>
+
+struct chip_operations soc_sifive_fu540_ops = {
+	CHIP_NAME("SIFIVE FU540")
+};