soc/amd/cpu.c: Conditionally define .acpi_fill_ssdt

Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Change-Id: I0e81c08191f3c5f768bd3cad0e4915d4476c739f
Reviewed-on: https://review.coreboot.org/c/coreboot/+/76493
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-by: Matt DeVillier <matt.devillier@amd.corp-partner.google.com>

src/soc/amd/common/block/cpu/cpu.c

@@ -21,5 +21,7 @@ struct device_operations amd_cpu_bus_ops = {
 	.read_resources	= noop_read_resources,
 	.set_resources	= noop_set_resources,
 	.init		= mp_cpu_bus_init,
+#if CONFIG(HAVE_ACPI_TABLES)
 	.acpi_fill_ssdt	= generate_cpu_entries,
+#endif
 };