[U-Boot] [PATCH v2] Makefile: Add U_BOOT_TZ and include in version

[Chris Packham <judge.packham@gmail.com>]

Define U_BOOT_TZ alongside U_BOOT_TIME and U_BOOT_DATE and use it to
include the timezone in the version output.

Acked-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Chris Packham <judge.packham@gmail.com>
---
As per feedback from Tom I've switched to '%z' so that any size increase
as a result of the timezone information is constant.

Changes in v2:
- Switched to '%z'
- Rebased against 2017.07-rc1

 Makefile          | 3 ++-
 include/version.h | 2 +-
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/Makefile b/Makefile
index 24503ac..1f488aa 100644
--- a/Makefile
+++ b/Makefile
@@ -1230,7 +1230,8 @@ endef
 
 define filechk_timestamp.h
 	(LC_ALL=C date +'#define U_BOOT_DATE "%b %d %C%y"'; \
-	LC_ALL=C date +'#define U_BOOT_TIME "%T"')
+	LC_ALL=C date +'#define U_BOOT_TIME "%T"'; \
+	LC_ALL=C date +'#define U_BOOT_TZ "%z"')
 endef
 
 $(version_h): include/config/uboot.release FORCE
diff --git a/include/version.h b/include/version.h
index d6c7cf2..777e9f6 100644
--- a/include/version.h
+++ b/include/version.h
@@ -19,7 +19,7 @@
 #endif
 
 #define U_BOOT_VERSION_STRING U_BOOT_VERSION " (" U_BOOT_DATE " - " \
-	U_BOOT_TIME ")" CONFIG_IDENT_STRING
+	U_BOOT_TIME " " U_BOOT_TZ ")" CONFIG_IDENT_STRING
 
 #ifndef __ASSEMBLY__
 extern const char version_string[];
-- 
2.3.5