Update menuconfig items with approximate applet sizes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/procps/iostat.c b/procps/iostat.c
index c290c59..94a9280 100644
--- a/procps/iostat.c
+++ b/procps/iostat.c
@@ -8,7 +8,7 @@
  */
 
 //config:config IOSTAT
-//config:	bool "iostat"
+//config:	bool "iostat (7.4 kb)"
 //config:	default y
 //config:	help
 //config:	  Report CPU and I/O statistics