dhcpcd: bump to version 6.6.2

Also add hash file.

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

package/dhcpcd/dhcpcd.hash

@@ -0,0 +1,2 @@
+# Locally calculated from download (no sig, hash)
+sha256	879c81febafc95ed9353909b719af765e9925c6cb06226b79da6c0dd176fe89f	dhcpcd-6.6.2.tar.bz2

package/dhcpcd/dhcpcd.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-DHCPCD_VERSION = 6.4.7
+DHCPCD_VERSION = 6.6.2
 DHCPCD_SOURCE = dhcpcd-$(DHCPCD_VERSION).tar.bz2
 DHCPCD_SITE = http://roy.marples.name/downloads/dhcpcd
 DHCPCD_DEPENDENCIES = host-pkgconf