env: Warn on force access if ENV_ACCESS_IGNORE_FORCE set

If the ENV_ACCESS_IGNORE_FORCE is set, inform user that the variable
cannot be force-set if such attempt happens.

Signed-off-by: Marek Vasut <marex@denx.de>
Reviewed-by: Tom Rini <trini@konsulko.com>

env/flags.c

@@ -524,8 +524,10 @@ int env_flags_validate(const struct env_entry *item, const char *newval,
 
 	/* check for access permission */
 #ifndef CONFIG_ENV_ACCESS_IGNORE_FORCE
-	if (flag & H_FORCE)
+	if (flag & H_FORCE) {
+		printf("## Error: Can't force access to \"%s\"\n", name);
 		return 0;
+	}
 #endif
 	switch (op) {
 	case env_op_delete: