scripts: add license. [1/1]

PD#SWPL-69730

Problem:
add license

Solution:
add license

Verify:
ad401_a113l

Signed-off-by: yang.li <yang.li@amlogic.com>
Change-Id: I73eee4629176d54295d9dc27f27022449ce02ee4
diff --git a/build_all.sh b/build_all.sh
index 1d72778..90e50ac 100755
--- a/build_all.sh
+++ b/build_all.sh
@@ -1,8 +1,9 @@
 #!/bin/bash
-
+#
 # Copyright (c) 2021-2022 Amlogic, Inc. All rights reserved.
-
+#
 # SPDX-License-Identifier: MIT
+#
 
 #usage:./scripts/build_all.sh at rtos sdk root dir