[U-Boot] [PATCH] Fix default env includes to fix sandbox build

[Peter Robinson]

defconfig and sandbox fails to build due to a with with the following error:

error: expected '}' before 'BOOT_TARGET_DEVICES_references_HOST_without_CONFIG_SANDBOX'
  CONFIG_EXTRA_ENV_SETTINGS

Based on the responaes below to the thread add linux/kconfig.h higher in th includes
and drop the now unneeded autoconf.h lower down to ensure the default environment is
included correctly

http://lists.denx.de/pipermail/u-boot/2015-June/216849.html

Signed-off-by: Peter Robinson <pbrobinson at gmail.com>
---
 tools/env/fw_env.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tools/env/fw_env.h b/tools/env/fw_env.h
index d6faf34..60c0517 100644
--- a/tools/env/fw_env.h
+++ b/tools/env/fw_env.h
@@ -6,6 +6,8 @@
  */
 
 /* Pull in the current config to define the default environment */
+#include <linux/kconfig.h>
+
 #ifndef __ASSEMBLY__
 #define __ASSEMBLY__ /* get only #defines from config.h */
 #include <config.h>
@@ -13,7 +15,6 @@
 #else
 #include <config.h>
 #endif
-#include <generated/autoconf.h>
 
 /*
  * To build the utility with the static configuration
-- 
2.4.3