libseccomp: workaround a recursive dependency

DEPENDS:=@!arc is causing a recursive dependency because of the optional
selection of libseccomp by util/lxc.  The workaround hides the package
in Package/libseccomp/config instead.

Signed-off-by: Eneas U de Queiroz <cote2004-github@yahoo.com>

libs/libseccomp/Makefile

@@ -26,6 +26,11 @@ PKG_CONFIG_DEPENDS:= \
 
 include $(INCLUDE_DIR)/package.mk
 
+# This is done instead of DEPENDS:=@!arc to avoid a recursive dependency when
+# the library is conditionally selected by util/lxc.
+define Package/libseccomp/config
+  depends on !arc
+endef
 
 define Package/libseccomp/Default
   SUBMENU:=
@@ -33,7 +38,6 @@ define Package/libseccomp/Default
   CATEGORY:=Libraries
   TITLE:=seccomp
   URL:=https://github.com/seccomp/libseccomp/wiki
-  DEPENDS:=@!arc
 endef
 
 define Package/libseccomp/Default/description
@@ -47,7 +51,6 @@ endef
 define Package/libseccomp
 $(call Package/libseccomp/Default)
   TITLE+= (library)
-  DEPENDS+=
 endef
 
 define Package/scmp_sys_resolver