build system: tidying up CONFIG_xxx names (suggested by Rob)
diff --git a/networking/udhcp/options.c b/networking/udhcp/options.c
index b6e77e3..6bf99e2 100644
--- a/networking/udhcp/options.c
+++ b/networking/udhcp/options.c
@@ -43,7 +43,7 @@
{ OPTION_STRING , 0x42 }, /* tftp */
{ OPTION_STRING , 0x43 }, /* bootfile */
{ OPTION_STRING , 0x4D }, /* userclass */
-#if ENABLE_FEATURE_RFC3397
+#if ENABLE_FEATURE_UDHCP_RFC3397
{ OPTION_STR1035 | OPTION_LIST , 0x77 }, /* search */
#endif
/* MSIE's "Web Proxy Autodiscovery Protocol" support */
@@ -92,7 +92,7 @@
"tftp" "\0"
"bootfile" "\0"
"userclass" "\0"
-#if ENABLE_FEATURE_RFC3397
+#if ENABLE_FEATURE_UDHCP_RFC3397
"search" "\0"
#endif
/* MSIE's "Web Proxy Autodiscovery Protocol" support */
@@ -106,7 +106,7 @@
[OPTION_IP_PAIR] = 8,
[OPTION_BOOLEAN] = 1,
[OPTION_STRING] = 1,
-#if ENABLE_FEATURE_RFC3397
+#if ENABLE_FEATURE_UDHCP_RFC3397
[OPTION_STR1035] = 1,
#endif
[OPTION_U8] = 1,