Revert "soc/intel/xeon_sp: Improve performance efficiencies"

This reverts commit d51449d017410fedb55e93f71fb322749ba888b5.

Reason for revert: Causing compilation issue as below

src/soc/intel/xeon_sp/cpx/acpi.c: In function 'acpi_create_rhsa':
src/soc/intel/xeon_sp/cpx/acpi.c:825:4: error: initialization
discards 'const' qualifier from pointer target type
[-Werror=discarded-qualifiers]
    &hob->PlatformData.IIO_resource[socket];
    ^
Change-Id: I7050060f1db7b9a9b5a77b5a6245c8fda05623a4
Signed-off-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/44998
Reviewed-by: Maxim Polyakov <max.senia.poliak@gmail.com>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/soc/intel/xeon_sp/cpx/acpi.c b/src/soc/intel/xeon_sp/cpx/acpi.c
index 1b6f1a3..cd497c5 100644
--- a/src/soc/intel/xeon_sp/cpx/acpi.c
+++ b/src/soc/intel/xeon_sp/cpx/acpi.c
@@ -605,16 +605,16 @@
  * in the context of ATSR subtable, it adds ATSR subtable when it is first called.
  */
 static unsigned long acpi_create_dmar_ds_pci_br_for_port(unsigned long current,
-	int port, int stack, const IIO_RESOURCE_INSTANCE *iio_resource, uint32_t pcie_seg,
+	int port, int stack, IIO_RESOURCE_INSTANCE iio_resource, uint32_t pcie_seg,
 	bool is_atsr, bool *first)
 {
 
 	if (get_stack_for_port(port) != stack)
 		return 0;
 
-	const uint32_t bus = iio_resource->StackRes[stack].BusBase;
-	const uint32_t dev = iio_resource->PcieInfo.PortInfo[port].Device;
-	const uint32_t func = iio_resource->PcieInfo.PortInfo[port].Function;
+	const uint32_t bus = iio_resource.StackRes[stack].BusBase;
+	const uint32_t dev = iio_resource.PcieInfo.PortInfo[port].Device;
+	const uint32_t func = iio_resource.PcieInfo.PortInfo[port].Function;
 
 	const uint32_t id = pci_mmio_read_config32(PCI_DEV(bus, dev, func),
 		PCI_VENDOR_ID);
@@ -703,8 +703,8 @@
 
 	// Add PCIe Ports
 	if (socket != 0 || stack != CSTACK) {
-		const IIO_RESOURCE_INSTANCE *iio_resource =
-			&hob->PlatformData.IIO_resource[socket];
+		IIO_RESOURCE_INSTANCE iio_resource =
+			hob->PlatformData.IIO_resource[socket];
 		for (int p = PORT_0; p < MAX_PORTS; ++p)
 			current += acpi_create_dmar_ds_pci_br_for_port(current, p, stack,
 				iio_resource, pcie_seg, false, NULL);
@@ -748,12 +748,12 @@
 		uint32_t pcie_seg = hob->PlatformData.CpuQpiInfo[socket].PcieSegment;
 		unsigned long tmp = current;
 		bool first = true;
-		const IIO_RESOURCE_INSTANCE *iio_resource =
-			&hob->PlatformData.IIO_resource[socket];
+		IIO_RESOURCE_INSTANCE iio_resource =
+			hob->PlatformData.IIO_resource[socket];
 
 		for (int stack = 0; stack <= PSTACK2; ++stack) {
-			uint32_t bus = iio_resource->StackRes[stack].BusBase;
-			uint32_t vtd_base = iio_resource->StackRes[stack].VtdBarAddress;
+			uint32_t bus = iio_resource.StackRes[stack].BusBase;
+			uint32_t vtd_base = iio_resource.StackRes[stack].VtdBarAddress;
 			if (!vtd_base)
 				continue;
 			uint64_t vtd_mmio_cap = read64((void *)(vtd_base + VTD_EXT_CAP_LOW));
@@ -821,10 +821,10 @@
 	assert(hob != NULL && hob_size != 0);
 
 	for (int socket = 0; socket < hob->PlatformData.numofIIO; ++socket) {
-		IIO_RESOURCE_INSTANCE *iio_resource =
-			&hob->PlatformData.IIO_resource[socket];
+		IIO_RESOURCE_INSTANCE iio_resource =
+			hob->PlatformData.IIO_resource[socket];
 		for (int stack = 0; stack <= PSTACK2; ++stack) {
-			uint32_t vtd_base = iio_resource->StackRes[stack].VtdBarAddress;
+			uint32_t vtd_base = iio_resource.StackRes[stack].VtdBarAddress;
 			if (!vtd_base)
 				continue;