core: fix download menu

Currently, when one enables the "Only allow downloads from primary"
option, all the other mirror options are hidden (expected!) but the
LuaRocks and CPAN mirrors (bad!).

Fix that.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

Config.in

@@ -218,8 +218,6 @@ config BR2_GNU_MIRROR
 	     http://ftp.gnu.org/pub/gnu
 	     http://mirror.aarnet.edu.au/pub/gnu
 
-endif
-
 config BR2_LUAROCKS_MIRROR
 	string "LuaRocks mirror"
 	default "http://rocks.moonscript.org"
@@ -239,6 +237,8 @@ config BR2_CPAN_MIRROR
 	  The list of mirrors is available at:
 	  http://search.cpan.org/mirror
 
+endif
+
 endmenu
 
 config BR2_JLEVEL