config_cmd_default.h: Add 'env exists' command

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.simons@collabora.co.uk>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Stephen Warren <swarren@nvidia.com>

diff --git a/include/config_cmd_default.h b/include/config_cmd_default.h
index 73c9544ea0d72e275fe7eb56a50f727f7fed69fe..e79a13be8bafcd68983435504d07a3d9d0fe261a 100644 (file)
--- 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    */