Configure IPv6 kernel options in config/Config-kernel.in

Revision 46834 changed IPv6 support from a module to builtin. But
since the configuration of the IPv6 kernel options was left in
package/kernel/linux/modules/netsupport.mk, this means that an
empty kmod-ipv6 module was still being generated (not packaged).

This patch moves the configuration of the IPv6 kernel options to
config/Config-kernel.in to remove this last bit of the module.

Note that CONFIG_IPV6_PRIVACY was dropped (enabled by default
since Linux v3.13), so this option is no longer needed.

See 5d9efa7ee9

Signed-off-by: Arjen de Korte <arjen+openwrt@de-korte.org>

SVN-Revision: 48132

config/Config-kernel.in

@@ -551,3 +551,26 @@ config KERNEL_SECCOMP
 		default n
 		help
 		  Build kernel with support for seccomp.
+
+#
+# IPv6 configuration
+#
+
+config KERNEL_IPV6
+	def_bool IPV6
+
+if KERNEL_IPV6
+
+	config KERNEL_IPV6_MULTIPLE_TABLES
+		def_bool y
+
+	config KERNEL_IPV6_SUBTREES
+		def_bool y
+
+	config KERNEL_IPV6_MROUTE
+		def_bool y
+
+	config KERNEL_IPV6_PIMSM_V2
+		def_bool n
+
+endif

package/kernel/linux/modules/netsupport.mk

@@ -454,28 +454,6 @@ endef
 $(eval $(call KernelPackage,iptunnel6))
 
 
-define KernelPackage/ipv6
-  SUBMENU:=$(NETWORK_SUPPORT_MENU)
-  TITLE:=IPv6 support
-  DEPENDS:=@IPV6
-  HIDDEN:=1
-  DEFAULT:=y
-  KCONFIG:= \
-	CONFIG_IPV6=y \
-	CONFIG_IPV6_PRIVACY=y \
-	CONFIG_IPV6_MULTIPLE_TABLES=y \
-	CONFIG_IPV6_MROUTE=y \
-	CONFIG_IPV6_PIMSM_V2=n \
-	CONFIG_IPV6_SUBTREES=y
-endef
-
-define KernelPackage/ipv6/description
- Kernel modules for IPv6 support
-endef
-
-$(eval $(call KernelPackage,ipv6))
-
-
 define KernelPackage/sit
   SUBMENU:=$(NETWORK_SUPPORT_MENU)
   DEPENDS:=@IPV6 +kmod-iptunnel +kmod-iptunnel4