env: remove value from boolean defines

Several boolean defines have a value assigned.
Remove the value as defining the symbol is enough.

Signed-off-by: Igor Grinberg <grinberg@compulab.co.il>
Acked-by: Marek Vasut <marek.vasut@gmail.com>
Acked-by: Mike Frysinger <vapier@gentoo.org>
diff --git a/tools/envcrc.c b/tools/envcrc.c
index 51e3f54..08d2a8f 100644
--- a/tools/envcrc.c
+++ b/tools/envcrc.c
@@ -53,15 +53,15 @@
 # endif
 # if (CONFIG_ENV_ADDR >= CONFIG_SYS_MONITOR_BASE) && \
      ((CONFIG_ENV_ADDR + CONFIG_ENV_SIZE) <= (CONFIG_SYS_MONITOR_BASE + CONFIG_SYS_MONITOR_LEN))
-#  define ENV_IS_EMBEDDED	1
+#  define ENV_IS_EMBEDDED
 # endif
 # if defined(CONFIG_ENV_ADDR_REDUND) || defined(CONFIG_ENV_OFFSET_REDUND)
-#  define CONFIG_SYS_REDUNDAND_ENVIRONMENT	1
+#  define CONFIG_SYS_REDUNDAND_ENVIRONMENT
 # endif
 #endif	/* CONFIG_ENV_IS_IN_FLASH */
 
 #if defined(ENV_IS_EMBEDDED) && !defined(CONFIG_BUILD_ENVCRC)
-# define CONFIG_BUILD_ENVCRC 1
+# define CONFIG_BUILD_ENVCRC
 #endif
 
 #ifdef CONFIG_SYS_REDUNDAND_ENVIRONMENT