staging: android: ion: Fix license identifier comment format

checkpatch.pl complains these are invalid because the rules in
Documentation/process/license-rules.rst state that C headers should
have "/* */" style comments.

Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Acked-by: Laura Abbott <labbott@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/staging/android/ion/ion.h b/drivers/staging/android/ion/ion.h
index ea08978..16cbd38 100644
--- a/drivers/staging/android/ion/ion.h
+++ b/drivers/staging/android/ion/ion.h
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * drivers/staging/android/ion/ion.h
  *
diff --git a/drivers/staging/android/uapi/ion.h b/drivers/staging/android/uapi/ion.h
index 825d3e9..5d70098 100644
--- a/drivers/staging/android/uapi/ion.h
+++ b/drivers/staging/android/uapi/ion.h
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * drivers/staging/android/uapi/ion.h
  *