dhcpcd: bump to version 6.6.4

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

package/dhcpcd/dhcpcd.hash

@@ -1,2 +1,2 @@
 # Locally calculated from download (no sig, hash)
-sha256	879c81febafc95ed9353909b719af765e9925c6cb06226b79da6c0dd176fe89f	dhcpcd-6.6.2.tar.bz2
+sha256	67ba7cfe96089150da8e12badbcc5853daefce39417364887984948bad0a37d0	dhcpcd-6.6.4.tar.bz2

package/dhcpcd/dhcpcd.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-DHCPCD_VERSION = 6.6.2
+DHCPCD_VERSION = 6.6.4
 DHCPCD_SOURCE = dhcpcd-$(DHCPCD_VERSION).tar.bz2
 DHCPCD_SITE = http://roy.marples.name/downloads/dhcpcd
 DHCPCD_DEPENDENCIES = host-pkgconf