Instead of selecting REGEX when NET is enabled, make it the default, but
allow boards that are tiny to disable it and lose functionality on all
but the first Ethernet adapter.

cm-bf548, bf538f-ezkit, and bf533-stamp need this. None appear to have
more than one Ethernet interface.

Signed-off-by: Joe Hershberger <[email protected]>
---

 include/env_callback.h | 4 +++-
 lib/Kconfig            | 1 +
 net/Kconfig            | 1 -
 3 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/include/env_callback.h b/include/env_callback.h
index ab5d42d..90b95b5 100644
--- a/include/env_callback.h
+++ b/include/env_callback.h
@@ -33,8 +33,10 @@
 
 #ifdef CONFIG_REGEX
 #define ENV_DOT_ESCAPE "\\"
+#define ETHADDR_WILDCARD "\\d?"
 #else
 #define ENV_DOT_ESCAPE
+#define ETHADDR_WILDCARD
 #endif
 
 #ifdef CONFIG_CMD_DNS
@@ -53,7 +55,7 @@
        "nvlan:nvlan," \
        "vlan:vlan," \
        DNS_CALLBACK \
-       "eth\\d?addr:ethaddr,"
+       "eth" ETHADDR_WILDCARD "addr:ethaddr,"
 #else
 #define NET_CALLBACKS
 #endif
diff --git a/lib/Kconfig b/lib/Kconfig
index 7ec8c98..c98d399 100644
--- a/lib/Kconfig
+++ b/lib/Kconfig
@@ -38,6 +38,7 @@ config SYS_VSNPRINTF
 
 config REGEX
        bool "Enable regular expression support"
+       default y if NET
        help
          If this variable is defined, U-Boot is linked against the
          SLRE (Super Light Regular Expression) library, which adds
diff --git a/net/Kconfig b/net/Kconfig
index 9a9846e..915371d 100644
--- a/net/Kconfig
+++ b/net/Kconfig
@@ -4,7 +4,6 @@
 
 menuconfig NET
        bool "Networking support"
-       select REGEX
 
 if NET
 
-- 
1.7.11.5

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