net: Fix compile failure in net.c

Add missing "defined" statement to fix the compile failures.

Signed-off-by: Holger Dengler <dengler@linutronix.de>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>

net/net.c

@@ -489,7 +489,7 @@ restart:
 			cdp_start();
 			break;
 #endif
-#if defined(CONFIG_NETCONSOLE) && !(CONFIG_SPL_BUILD)
+#if defined(CONFIG_NETCONSOLE) && !defined(CONFIG_SPL_BUILD)
 		case NETCONS:
 			nc_start();
 			break;
@@ -1258,7 +1258,7 @@ void net_process_received_packet(uchar *in_packet, int len)
 		}
 #endif
 
-#if defined(CONFIG_NETCONSOLE) && !(CONFIG_SPL_BUILD)
+#if defined(CONFIG_NETCONSOLE) && !defined(CONFIG_SPL_BUILD)
 		nc_input_packet((uchar *)ip + IP_UDP_HDR_SIZE,
 				src_ip,
 				ntohs(ip->udp_dst),