iproute2: add hash

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

package/iproute2/iproute2.hash

@@ -0,0 +1,2 @@
+# From https://kernel.org/pub/linux/utils/net/iproute2/sha256sums.asc
+sha256	1f0a8a6c0e872166f75433f5cbf9766f3002b5c2f13501b3bb8c51846a127b79	iproute2-3.16.0.tar.xz