sti: fix STMicroelectronics copyright

Uniformize all STMicroelectronics copyrights headers for STi
related code.

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
diff --git a/drivers/timer/sti-timer.c b/drivers/timer/sti-timer.c
index e1419c4..a8bd139 100644
--- a/drivers/timer/sti-timer.c
+++ b/drivers/timer/sti-timer.c
@@ -1,5 +1,6 @@
 /*
- * (C) Copyright 2017 Patrice Chotard <patrice.chotard@st.com>
+ * Copyright (C) 2017, STMicroelectronics - All Rights Reserved
+ * Author(s): Patrice Chotard, <patrice.chotard@st.com> for STMicroelectronics.
  *
  * SPDX-License-Identifier:	GPL-2.0+
  */