libunistring: move at the right location in menuconfig

It should be in "Libraries" -> "Text" instead of "Libraries" ->
"Other", and also entries should be sorted alphabetically.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/Config.in

@@ -909,7 +909,6 @@ menu "Other"
 	source "package/startup-notification/Config.in"
 	source "package/tz/Config.in"
 	source "package/tzdata/Config.in"
-	source "package/libunistring/Config.in"
 endmenu
 
 menu "Security"
@@ -924,6 +923,7 @@ menu "Text and terminal handling"
 	source "package/libestr/Config.in"
 	source "package/libfribidi/Config.in"
 	source "package/libiconv/Config.in"
+	source "package/libunistring/Config.in"
 	source "package/linenoise/Config.in"
 	source "package/ncurses/Config.in"
 	source "package/newt/Config.in"