soc/amd: use KiB and MiB definitions

Use KiB and MiB instead of multiplying/dividing with/by the numeric
value when doing region size calculations.

Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: I56c380190b11aa3214cce31b82974327e3d15000
Reviewed-on: https://review.coreboot.org/c/coreboot/+/59936
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by:  Felix Singer <felixsinger@posteo.net>

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

@@ -14,7 +14,7 @@ static void iommu_read_resources(struct device *dev)
 
 	/* Add an extra subtractive resource for both memory and I/O. */
 	res = new_resource(dev, 0x44);
-	res->size = 512 * 1024;
+	res->size = 512 * KiB;
 	res->align = log2(res->size);
 	res->gran = log2(res->size);
 	res->limit = 0xffffffff;	/* 4G */

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

@@ -106,7 +106,7 @@ static void lpc_read_resources(struct device *dev)
 		     IORESOURCE_ASSIGNED | IORESOURCE_FIXED;
 
 	/* Add a memory resource for the SPI BAR. */
-	fixed_mem_resource(dev, 2, SPI_BASE_ADDRESS / 1024, 1,
+	fixed_mem_resource(dev, 2, SPI_BASE_ADDRESS / KiB, 1,
 			IORESOURCE_SUBTRACTIVE);
 
 	res = new_resource(dev, 3); /* IOAPIC */

src/soc/amd/picasso/agesa_acpi.c

@@ -82,7 +82,7 @@ static unsigned long gen_crat_memory_entries(struct acpi_crat_header *crat,
 			if (memory_base == 0) {
 				current =
 					create_crat_memory_entry(0, 0ull, 0xa0000ull, current);
-				memory_base = (1 * 1024 * 1024);
+				memory_base = 1 * MiB;
 				memory_length = memory_base;
 				new_entries++;
 			}