stv0991: fix STMicroelectronics copyright

Uniformize STMicroelectronics copyrights headers for STV0991
related code.

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
diff --git a/arch/arm/cpu/armv7/stv0991/clock.c b/arch/arm/cpu/armv7/stv0991/clock.c
index 26c0d36..c54168e 100644
--- a/arch/arm/cpu/armv7/stv0991/clock.c
+++ b/arch/arm/cpu/armv7/stv0991/clock.c
@@ -1,6 +1,6 @@
 /*
- * (C) Copyright 2014
- * Vikas Manocha, ST Micoelectronics, vikas.manocha@st.com.
+ * Copyright (C) 2014, STMicroelectronics - All Rights Reserved
+ * Author(s): Vikas Manocha, <vikas.manocha@st.com> for STMicroelectronics.
  *
  * SPDX-License-Identifier:	GPL-2.0+
  */