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/device/device_util.c

@@ -822,7 +822,7 @@ void show_all_devs_resources(int debug_level, const char *msg)
 	}
 }
 
-void fixed_mem_resource(struct device *dev, unsigned long index,
+void fixed_mem_resource_kb(struct device *dev, unsigned long index,
 			unsigned long basek, unsigned long sizek,
 			unsigned long type)
 {