env exists allows scripts to query whether an environment variable
exists. Enable by default as it adds only a trivial amount of code and
can be useful in scripts.

Signed-off-by: Sjoerd Simons <sjoerd.sim...@collabora.co.uk>
---
 include/config_cmd_default.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/config_cmd_default.h b/include/config_cmd_default.h
index 73c9544..e79a13b 100644
--- a/include/config_cmd_default.h
+++ b/include/config_cmd_default.h
@@ -21,6 +21,7 @@
 #define CONFIG_CMD_CONSOLE     /* coninfo                      */
 #define CONFIG_CMD_ECHO                /* echo arguments               */
 #define CONFIG_CMD_EDITENV     /* editenv                      */
+#define CONFIG_CMD_ENV_EXISTS  /* query whether env variables exists */
 #define CONFIG_CMD_FPGA                /* FPGA configuration Support   */
 #define CONFIG_CMD_IMI         /* iminfo                       */
 #define CONFIG_CMD_ITEST       /* Integer (and string) test    */
-- 
2.1.4

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