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>

src/cpu/amd/mtrr/amd_mtrr.c

@@ -19,5 +19,5 @@ void add_uma_resource_below_tolm(struct device *nb, int idx)
 	printk(BIOS_INFO, "%s: uma size 0x%08x, memory start 0x%08x\n",
 			__func__, uma_size, uma_base);
 
-	uma_resource(nb, idx, uma_base / KiB, uma_size / KiB);
+	uma_resource_kb(nb, idx, uma_base / KiB, uma_size / KiB);
 }