Convert all util-linux/* applets to "new style" applet definitions

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

util-linux/losetup.c

@@ -6,6 +6,18 @@
  *
  * Licensed under GPLv2 or later, see file LICENSE in this source tree.
  */
+//config:config LOSETUP
+//config:	bool "losetup"
+//config:	default y
+//config:	select PLATFORM_LINUX
+//config:	help
+//config:	  losetup is used to associate or detach a loop device with a regular
+//config:	  file or block device, and to query the status of a loop device. This
+//config:	  version does not currently support enabling data encryption.
+
+//kbuild:lib-$(CONFIG_LOSETUP) += losetup.o
+
+//applet:IF_LOSETUP(APPLET(losetup, BB_DIR_SBIN, BB_SUID_DROP))
 
 //usage:#define losetup_trivial_usage
 //usage:       "[-r] [-o OFS] {-f|LOOPDEV} FILE - associate loop devices\n"