ulogd: only for kernels <= 3.16.x

The ulog netfilter target has been deprecated for some time and removed
in kernels >= 3.17.x so limit it to older headers. Fixes:
http://autobuild.buildroot.net/results/9ca/9ca43764c7363f9a00b8a0c7df20a492c00088b5/

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/ulogd/Config.in

@@ -4,6 +4,8 @@ config BR2_PACKAGE_ULOGD
 	depends on BR2_LARGEFILE
 	depends on !BR2_PREFER_STATIC_LIB
 	depends on BR2_USE_MMU
+	# ulog support removed for kernels >= 3.17
+	depends on !BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_17
 	select BR2_PACKAGE_LIBMNL
 	select BR2_PACKAGE_LIBNETFILTER_ACCT
 	select BR2_PACKAGE_LIBNETFILTER_CONNTRACK
@@ -17,3 +19,4 @@ config BR2_PACKAGE_ULOGD
 comment "ulogd needs a toolchain w/ IPv6, largefile, dynamic library"
 	depends on !BR2_INET_IPV6 || !BR2_LARGEFILE || BR2_PREFER_STATIC_LIB
 	depends on BR2_USE_MMU
+	depends on !BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_17