meta-networking: dhcpcd: backport ALIGN compile error fix

Fails to build on an aarch64 system with ipv6 disabled. This backported
patch fixes it.

Signed-off-by: Jack Mitchell <ml@embed.me.uk>
Signed-off-by: Khem Raj <raj.khem@gmail.com>

meta-networking/recipes-connectivity/dhcpcd/dhcpcd_9.1.4.bb

@@ -12,7 +12,8 @@ LIC_FILES_CHKSUM = "file://LICENSE;md5=9674cc803c5d71306941e6e8b5c002f2"
 UPSTREAM_CHECK_URI = "https://roy.marples.name/downloads/dhcpcd/"
 
 SRC_URI = "http://roy.marples.name/downloads/${BPN}/${BPN}-${PV}.tar.xz \
-           file://0001-remove-INCLUDEDIR-to-prevent-build-issues.patch"
+           file://0001-remove-INCLUDEDIR-to-prevent-build-issues.patch \
+	   file://0002-Fix-compile-without-IPv6-on-systems-that-do-not-define-ALIGN.patch"
 
 SRC_URI[sha256sum] = "5fe133e5497d8af6d26bd6e6b8dd48ab12d124d6cc4cefe6de6536ff97f76820"
 

meta-networking/recipes-connectivity/dhcpcd/files/0002-Fix-compile-without-IPv6-on-systems-that-do-not-define-ALIGN.patch

@@ -0,0 +1,34 @@
+From 7643b6615aab4de290ead6c1a6b56f10a82bbe6f Mon Sep 17 00:00:00 2001
+From: Roy Marples <roy@marples.name>
+Date: Sat, 4 Jul 2020 13:21:09 +0100
+Subject: [PATCH] Fix compile without IPv6 on systems that do not define ALIGN
+
+Upstream-Status: backport
+
+---
+ src/dhcpcd.h | 5 -----
+ 1 file changed, 5 deletions(-)
+
+diff --git a/src/dhcpcd.h b/src/dhcpcd.h
+index 61a6a081..d9719c0a 100644
+--- a/src/dhcpcd.h
++++ b/src/dhcpcd.h
+@@ -96,7 +96,6 @@ TAILQ_HEAD(if_head, interface);
+ 
+ #include "privsep.h"
+ 
+-#ifdef INET6
+ /* dhcpcd requires CMSG_SPACE to evaluate to a compile time constant. */
+ #if defined(__QNX) || \
+ 	(defined(__NetBSD_Version__) && __NetBSD_Version__ < 600000000)
+@@ -113,10 +112,6 @@ TAILQ_HEAD(if_head, interface);
+ #define	CMSG_SPACE(len)	(ALIGN(sizeof(struct cmsghdr)) + ALIGN(len))
+ #endif
+ 
+-#define IP6BUFLEN	(CMSG_SPACE(sizeof(struct in6_pktinfo)) + \
+-			CMSG_SPACE(sizeof(int)))
+-#endif
+-
+ struct passwd;
+ 
+ struct dhcpcd_ctx {