iproute2: add support of flag XFRM_STATE_ALIGN4

Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
diff --git a/ip/ipxfrm.c b/ip/ipxfrm.c
index a276c0b..0c7aaad 100644
--- a/ip/ipxfrm.c
+++ b/ip/ipxfrm.c
@@ -854,6 +854,7 @@
 		XFRM_FLAG_PRINT(fp, flags, XFRM_STATE_WILDRECV, "wildrecv");
 		XFRM_FLAG_PRINT(fp, flags, XFRM_STATE_ICMP, "icmp");
 		XFRM_FLAG_PRINT(fp, flags, XFRM_STATE_AF_UNSPEC, "af-unspec");
+		XFRM_FLAG_PRINT(fp, flags, XFRM_STATE_ALIGN4, "align4");
 		if (flags)
 			fprintf(fp, "%x", flags);
 	}