config: update size information

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/util-linux/fstrim.c b/util-linux/fstrim.c
index 558a94a..48948e8 100644
--- a/util-linux/fstrim.c
+++ b/util-linux/fstrim.c
@@ -8,7 +8,7 @@
  * Licensed under GPLv2 or later, see file LICENSE in this source tree.
  */
 //config:config FSTRIM
-//config:	bool "fstrim (5.5 kb)"
+//config:	bool "fstrim (4.4 kb)"
 //config:	default y
 //config:	select PLATFORM_LINUX
 //config:	help