Update menuconfig items with approximate applet sizes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/util-linux/rdev.c b/util-linux/rdev.c
index 0e1578e..6ea9c2a 100644
--- a/util-linux/rdev.c
+++ b/util-linux/rdev.c
@@ -9,7 +9,7 @@
  *
  */
 //config:config RDEV
-//config:	bool "rdev"
+//config:	bool "rdev (1.4 kb)"
 //config:	default y
 //config:	help
 //config:	  Print the device node associated with the filesystem mounted at '/'.