udhcpc: downgrade "MAC X:X:X:X:X:X" message to log2 level

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/networking/udhcp/socket.c b/networking/udhcp/socket.c
index ec6a1dc..34049c3 100644
--- a/networking/udhcp/socket.c
+++ b/networking/udhcp/socket.c
@@ -66,7 +66,7 @@
 			return -1;
 		}
 		memcpy(mac, ifr->ifr_hwaddr.sa_data, 6);
-		log1("MAC %02x:%02x:%02x:%02x:%02x:%02x",
+		log2("MAC %02x:%02x:%02x:%02x:%02x:%02x",
 			mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
 	}