env: Remove useless CONFIG_ENV_SIZE_REDUND and fix ENV_IS_REDUND check

We have CONFIG_ENV_SIZE_IS_REDUND but don't really use it.  We have one
board where we can simply multiple CONFIG_ENV_SIZE by two for the same
result.  The other place where we could but were not previously using
this is for where env_internal.h checks for if we should set
ENV_IS_EMBEDDED.  This seems like the most likely use, historically, of
the variable, but it was not used.  Add logic to check for this now.

Cc: Wolfgang Denk <wd@denx.de>
Cc: Joe Hershberger <joe.hershberger@ni.com>
Signed-off-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
diff --git a/include/env_internal.h b/include/env_internal.h
index d520e6a..b8158c0 100644
--- a/include/env_internal.h
+++ b/include/env_internal.h
@@ -50,8 +50,11 @@
 # else
 #  error "Both CONFIG_ENV_SECT_SIZE and CONFIG_ENV_SIZE undefined"
 # endif
-# if defined(CONFIG_ENV_ADDR_REDUND) && !defined(CONFIG_ENV_SIZE_REDUND)
-#  define CONFIG_ENV_SIZE_REDUND	CONFIG_ENV_SIZE
+# if	defined(CONFIG_ENV_ADDR_REDUND) && \
+	((CONFIG_ENV_ADDR >= CONFIG_SYS_MONITOR_BASE) &&		\
+	(CONFIG_ENV_ADDR_REDUND + CONFIG_ENV_SIZE) <=		\
+	(CONFIG_SYS_MONITOR_BASE + CONFIG_SYS_MONITOR_LEN))
+#  define ENV_IS_EMBEDDED
 # endif
 # if	(CONFIG_ENV_ADDR >= CONFIG_SYS_MONITOR_BASE) &&		\
 	(CONFIG_ENV_ADDR + CONFIG_ENV_SIZE) <=			\