package/uboot-tools: tools/env/fw_env.h: remove env.h

As reported by Nicolas Carrier on the Buildroot mailing list [1],
there is a new build issue while building a program which interacts with
the u-boot environment. This program uses the headers of the ubootenv
library provided by uboot-tools.

This is an upstream change from uboot [2] adding "#include <env.h>" to
fw_env.h. Adding env.h require a board configuration to build.

But only fw_env.h header is installed in the staging directory by
uboot-tools package, but since it now include env.h the build is broken
because env.h is missing from the staging directory.

It's seems an upstream bug since env_set() is not used in fw_env tool.
Nicolas removed env.h from fw_env tool and fixed it's build issue.

This problem is present since uboot v2019.10, so the uboot version
present in Buildroot 2020.02 is affected.

It's probably not a problem for upstream uboot but it's a problem
for uboot-tools package that build uboot tools without a board
configuration for the target.

[1] http://lists.busybox.net/pipermail/buildroot/2020-April/280307.html
[2] https://gitlab.denx.de/u-boot/u-boot/-/commit/9fb625ce05539fe6876a59ce1dcadb76b33c6f6e

Reported-by: Nicolas Carrier <nicolas.carrier@orolia.com>
Signed-off-by: Romain Naour <romain.naour@gmail.com>
[yann.morin.1998@free.fr: add URL to upstream commit]
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>

package/uboot-tools/0004-tools-env-fw_env.h-remove-env.h.patch

@@ -0,0 +1,52 @@
+From 664ef61e19d6261d8984493b5f22127ec2ad44fc Mon Sep 17 00:00:00 2001
+From: Romain Naour <romain.naour@gmail.com>
+Date: Sun, 10 May 2020 23:15:32 +0200
+Subject: [PATCH] tools/env/fw_env.h: remove env.h
+
+As reported by Nicolas Carrier on the Buildroot mailing list [1],
+there is a new build issue while building a program which interacts with
+the u-boot environment. This program uses the headers of the ubootenv
+library provided by uboot-tools.
+
+This is an upstream change from uboot [2] adding "#include <env.h>" to
+fw_env.h. Adding env.h require a board configuration to build.
+
+But only fw_env.h header is installed in the staging directory by
+uboot-tools package, but since it now include env.h the build is broken
+because env.h is missing from the staging directory.
+
+It's seems an upstream bug since env_set() is not used in fw_env tool.
+
+Adding env.h is an error since it also include compiler.h (and others
+uboot internal includes).
+
+Nicolas removed env.h from fw_env tool and fixed it's build issue.
+
+This problem is present since uboot v2019.10, so the uboot version
+present in Buildroot 2020.02 is affected.
+
+[1] http://lists.busybox.net/pipermail/buildroot/2020-April/280307.html
+[2] https://gitlab.denx.de/u-boot/u-boot/-/commit/9fb625ce05539fe6876a59ce1dcadb76b33c6f6e
+
+Reported-by: Nicolas Carrier <nicolas.carrier@orolia.com>
+Signed-off-by: Romain Naour <romain.naour@gmail.com>
+Upstream: https://gitlab.denx.de/u-boot/u-boot/-/commit/2aca8804d8d5f84d2d661e76e8d232c5c12445b5
+---
+ tools/env/fw_env.h | 1 -
+ 1 file changed, 1 deletion(-)
+
+diff --git a/tools/env/fw_env.h b/tools/env/fw_env.h
+index b60fbfc8f8..78c803c944 100644
+--- a/tools/env/fw_env.h
++++ b/tools/env/fw_env.h
+@@ -4,7 +4,6 @@
+  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+  */
+ 
+-#include <env.h>
+ #include <stdint.h>
+ 
+ /*
+-- 
+2.25.4
+