device/resource: Add _kb postfix for resource allocators

There is a lot of going back-and-forth with the KiB arguments, start
the work to migrate away from this.

Change-Id: I329864d36137e9a99b5640f4f504c45a02060a40
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/64658
Reviewed-by: Werner Zeh <werner.zeh@siemens.com>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/soc/intel/common/block/fast_spi/fast_spi.c b/src/soc/intel/common/block/fast_spi/fast_spi.c
index ed61c10..8dc173c 100644
--- a/src/soc/intel/common/block/fast_spi/fast_spi.c
+++ b/src/soc/intel/common/block/fast_spi/fast_spi.c
@@ -529,7 +529,7 @@
 	pci_dev_read_resources(dev);
 
 	/* Add SPI flash MMIO window as a reserved resource. */
-	mmio_resource(dev, 0, FLASH_BASE_ADDR / KiB, FLASH_MMIO_SIZE / KiB);
+	mmio_resource_kb(dev, 0, FLASH_BASE_ADDR / KiB, FLASH_MMIO_SIZE / KiB);
 }
 
 static struct device_operations fast_spi_dev_ops = {