Config.in.legacy: fix separator for 2016.05 legacy options

Since we opened up the next branch, a number of options have been
added to Config.in.legacy. However, they are located under the "legacy
options removed in 2016.02", which is not correct. This commit fixes
that by adding the "legacy options removed in 2016.05" header, and
restoring the one related to 2016.02 at the right location.

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

Config.in.legacy

@@ -143,7 +143,7 @@ comment "----------------------------------------------------"
 endif
 
 ###############################################################################
-comment "Legacy options removed in 2016.02"
+comment "Legacy options removed in 2016.05"
 
 config BR2_PACKAGE_SYSTEMD_ALL_EXTRAS
 	bool "systemd all extras option has been removed"
@@ -173,6 +173,9 @@ config BR2_PACKAGE_SQLITE_READLINE
 	  command-line editing should be enabled, it also also takes
 	  libedit into account.
 
+###############################################################################
+comment "Legacy options removed in 2016.02"
+
 config BR2_PACKAGE_OPENPOWERLINK_DEBUG_LEVEL
 	bool "openpowerlink debug option has been removed"
 	select BR2_LEGACY