iw: bump to version 4.0

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/iw/iw.hash

@@ -1,2 +1,2 @@
 # From https://www.kernel.org/pub/software/network/iw/sha256sums.asc
-sha256	48a62eb5cd8e757c9617749df96b01f133c184f6c107f18be660ee08f155fa93	iw-3.17.tar.xz
+sha256	2b4b7906d5ce89ce0ab523e5de8b619cddcc18fee7a2bfd6f9c62efab2d3bed6	iw-4.0.tar.xz

package/iw/iw.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-IW_VERSION = 3.17
+IW_VERSION = 4.0
 IW_SOURCE = iw-$(IW_VERSION).tar.xz
 IW_SITE = $(BR2_KERNEL_MIRROR)/software/network/iw
 IW_LICENSE = iw license