[U-Boot] [PATCH v2] Fix compiler warning in imximage.c due to getline prototype

[Kumar Gala]

imximage.c: In function 'imximage_parse_cfg_file':
imximage.c:142: warning: implicit declaration of function 'getline'

Signed-off-by: Kumar Gala <galak at kernel.crashing.org>
---
* Moved _GNU_SOURCE define into imximage.c per Mike F. suggestion

 tools/imximage.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/tools/imximage.c b/tools/imximage.c
index c1fdafb..59923ff 100644
--- a/tools/imximage.c
+++ b/tools/imximage.c
@@ -25,6 +25,9 @@
  * MA 02111-1307 USA
  */
 
+/* Required to obtain the getline prototype from stdio.h */
+#define _GNU_SOURCE
+
 #include "mkimage.h"
 #include <image.h>
 #include "imximage.h"
-- 
1.6.0.6