pciutils: add hash file

Also switch to xz tarball to avoid cached tarball hash conflict.

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/pciutils/pciutils.hash

@@ -0,0 +1,2 @@
+# From https://www.kernel.org/pub/software/utils/pciutils/sha256sums.asc
+sha256	8d62f84fe7a7401af2ed62d6303255a0cf7333f606c136927f0ba9110ab6824a	pciutils-3.2.1.tar.xz

package/pciutils/pciutils.mk

@@ -5,7 +5,8 @@
 ################################################################################
 
 PCIUTILS_VERSION = 3.2.1
-PCIUTILS_SITE = ftp://atrey.karlin.mff.cuni.cz/pub/linux/pci
+PCIUTILS_SITE = $(BR2_KERNEL_MIRROR)/software/utils/pciutils
+PCIUTILS_SOURCE = pciutils-$(PCIUTILS_VERSION).tar.xz
 PCIUTILS_INSTALL_STAGING = YES
 PCIUTILS_LICENSE = GPLv2+
 PCIUTILS_LICENSE_FILES = COPYING