sandbox: Enable DHCP and IP defrag

This is now testable via the eth-raw interface
Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

include/configs/sandbox.h

@@ -131,6 +131,14 @@
 #include <config_cmd_default.h>
 
 #define CONFIG_CMD_PING
+#define CONFIG_CMD_DHCP
+#define CONFIG_BOOTP_DNS
+#define CONFIG_BOOTP_DNS2
+#define CONFIG_BOOTP_GATEWAY
+#define CONFIG_BOOTP_SEND_HOSTNAME
+#define CONFIG_BOOTP_SERVERIP
+#define CONFIG_BOOTP_SUBNETMASK
+#define CONFIG_IP_DEFRAG
 
 #define CONFIG_CMD_HASH
 #define CONFIG_HASH_VERIFY