Added the shebang line at the top of file.

Signed-off-by: Bhaskar Chowdhury <unixbhaskar@gmail.com>
---
 .../selftests/drivers/net/mlxsw/spectrum-2/mirror_gre_scale.sh   | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/testing/selftests/drivers/net/mlxsw/spectrum-2/mirror_gre_scale.sh b/tools/testing/selftests/drivers/net/mlxsw/spectrum-2/mirror_gre_scale.sh
index f7c168decd1e..abe3835ded4d 100644
--- a/tools/testing/selftests/drivers/net/mlxsw/spectrum-2/mirror_gre_scale.sh
+++ b/tools/testing/selftests/drivers/net/mlxsw/spectrum-2/mirror_gre_scale.sh
@@ -1,3 +1,4 @@
+#!/bin/sh
 # SPDX-License-Identifier: GPL-2.0
 source ../mirror_gre_scale.sh

--
2.49.1