soc/intel/xeon_sp: Use a common function to get the IIO HOB

TESTED ocp/deltalake still boots.

Change-Id: I69f336c1ff348b8e820340b84494929f2c58ce72
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/47296
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/soc/intel/xeon_sp/skx/soc_acpi.c b/src/soc/intel/xeon_sp/skx/soc_acpi.c
index 95563f5..3ac46ff 100644
--- a/src/soc/intel/xeon_sp/skx/soc_acpi.c
+++ b/src/soc/intel/xeon_sp/skx/soc_acpi.c
@@ -17,6 +17,7 @@
 #include <soc/pci_devs.h>
 #include <soc/pm.h>
 #include <soc/soc_util.h>
+#include <soc/util.h>
 
 /* TODO: Check if the common/acpi weak function can be used */
 unsigned long acpi_fill_mcfg(unsigned long current)
@@ -99,10 +100,7 @@
 
 void uncore_inject_dsdt(const struct device *device)
 {
-	size_t hob_size;
-	const uint8_t uds_guid[16] = FSP_HOB_IIO_UNIVERSAL_DATA_GUID;
-	const IIO_UDS *hob = fsp_find_extension_hob_by_guid(uds_guid, &hob_size);
-	assert(hob != NULL && hob_size != 0);
+	const IIO_UDS *hob = get_iio_uds();
 
 	/* Only add RTxx entries once. */
 	if (device->bus->secondary != 0)