[PATCH] tools: Stop re-defining -std= when building tools

[Tom Rini]

While we intentionally set -std=gnu11 for building host tools, and have
for quite some time, we never dropped -std=gnu99 from tools/Makefile.
This resulted in passing -std=gnu11 ... -std=gnu99 when building, and
gnu99 would win.  This in turn would result now in warnings such as:
tools/mkeficapsule.c:25:15: warning: redefinition of typedef 'u32' is a C11 feature [-Wtypedef-redefinition]
typedef __u32 u32;
              ^

Signed-off-by: Tom Rini <trini at konsulko.com>
---
 tools/Makefile | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/tools/Makefile b/tools/Makefile
index 999fd4653166..b45219e2c30c 100644
--- a/tools/Makefile
+++ b/tools/Makefile
@@ -295,8 +295,7 @@ HOST_EXTRACFLAGS += -include $(srctree)/include/compiler.h \
 		-I$(srctree)/tools \
 		-DUSE_HOSTCC \
 		-D__KERNEL_STRICT_NAMES \
-		-D_GNU_SOURCE \
-		-std=gnu99
+		-D_GNU_SOURCE
 
 __build:	$(LOGO-y)
 
-- 
2.25.1