soc/intel/xeon_sp: Use common _CRS code generation

Drop SoC specific code and use generic implementation provided
by pci_domain_fill_ssdt.

TEST=Booted on IBM/SBP1 to Ubuntu 22.04.
TEST=intel/archercity CRB

Change-Id: I8b0bc2eb02569b5d74f8521d79e0af8fee880c80
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/80796
Reviewed-by: Shuo Liu <shuo.liu@intel.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Lean Sheng Tan <sheng.tan@9elements.com>
diff --git a/src/soc/intel/xeon_sp/spr/ioat.c b/src/soc/intel/xeon_sp/spr/ioat.c
index 2b6aafa..2e3baa3 100644
--- a/src/soc/intel/xeon_sp/spr/ioat.c
+++ b/src/soc/intel/xeon_sp/spr/ioat.c
@@ -1,5 +1,5 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
-
+#include <acpi/acpigen_pci.h>
 #include <stdbool.h>
 
 #include <console/console.h>
@@ -26,6 +26,7 @@
 #if CONFIG(HAVE_ACPI_TABLES)
 	.acpi_name        = soc_acpi_name,
 	.write_acpi_tables = northbridge_write_acpi_tables,
+	.acpi_fill_ssdt	   = pci_domain_fill_ssdt,
 #endif
 };