Use uboot raw env

Signed-off-by: Pascal Vizeli <pvizeli@syshack.ch>

buildroot-external/patches/uboot/0001-Support-HassOS-bootstate-partition.patch

@@ -0,0 +1,28 @@
+From 1529062f72cee8061b4733e1148357d227639900 Mon Sep 17 00:00:00 2001
+From: Pascal Vizeli <pvizeli@syshack.ch>
+Date: Mon, 11 Jun 2018 11:09:10 +0000
+Subject: [PATCH 1/1] Support HassOS bootstate partition
+
+Signed-off-by: Pascal Vizeli <pvizeli@syshack.ch>
+---
+ env/mmc.c | 4 ++++
+ 1 file changed, 4 insertions(+)
+
+diff --git a/env/mmc.c b/env/mmc.c
+index 5e3da6dca7..75c06899d1 100644
+--- a/env/mmc.c
++++ b/env/mmc.c
+@@ -18,6 +18,10 @@
+ #include <search.h>
+ #include <errno.h>
+ 
++#define CONFIG_SYS_MMC_ENV_DEV 0
++#define CONFIG_ENV_OFFSET 0x25100000
++#define CONFIG_ENV_SIZE 0x400000
++
+ #define __STR(X) #X
+ #define STR(X) __STR(X)
+ 
+-- 
+2.17.1
+