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/drivers/aspeed/ast2050/ast2050.c b/src/drivers/aspeed/ast2050/ast2050.c
index 7ead9a8..3aa4195 100644
--- a/src/drivers/aspeed/ast2050/ast2050.c
+++ b/src/drivers/aspeed/ast2050/ast2050.c
@@ -14,7 +14,7 @@
 static void aspeed_ast2050_read_resources(struct device *dev)
 {
 	/* Reserve VGA regions */
-	mmio_resource(dev, 3, 0xa0000 >> 10, 0x1ffff >> 10);
+	mmio_resource_kb(dev, 3, 0xa0000 >> 10, 0x1ffff >> 10);
 
 	/* Run standard resource read routine */
 	pci_dev_read_resources(dev);