iproute2: bump version to 4.19.0

For support for the new 4.19+ kernel features. Release notes:
https://lwn.net/ml/netdev/20181023104935.282ff4ec@xeon-e3/

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Reviewed-by: Petr Vorel <petr.vorel@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/iproute2/iproute2.hash

@@ -1,3 +1,3 @@
 # From https://kernel.org/pub/linux/utils/net/iproute2/sha256sums.asc
-sha256	a9e6c70c95f513871c5e1f4e452c04fcb3c4d8a05be651bd794cd994a52daa45  iproute2-4.18.0.tar.xz
+sha256	d9ec5ca1f47d8a85416fa26e7dc1cbf5d067640eb60e90bdc1c7e5bdc6a29984  iproute2-4.19.0.tar.xz
 sha256	e6d6a009505e345fe949e1310334fcb0747f28dae2856759de102ab66b722cb4	COPYING

package/iproute2/iproute2.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-IPROUTE2_VERSION = 4.18.0
+IPROUTE2_VERSION = 4.19.0
 IPROUTE2_SOURCE = iproute2-$(IPROUTE2_VERSION).tar.xz
 IPROUTE2_SITE = $(BR2_KERNEL_MIRROR)/linux/utils/net/iproute2
 IPROUTE2_DEPENDENCIES = host-bison host-flex host-pkgconf \