tools: mkimage: Mark copy_datafile() as static

The function is only used locally. Enabling -Wmissing-prototypes
triggers a warning. Mark it as static.

Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>

diff --git a/tools/mkimage.c b/tools/mkimage.c
index 361711c..8474539 100644 (file)
--- a/tools/mkimage.c
+++ b/tools/mkimage.c
@@ -445,7 +445,7 @@ static void verify_image(const struct image_type_params *tparams)
        (void)close(ifd);
 }
 
-void copy_datafile(int ifd, char *file)
+static void copy_datafile(int ifd, char *file)
 {
        if (!file)
                return;