spear: fix STMicroelectronics copyright

Uniformize STMicroelectronics copyrights headers for SPEAR
related code.

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>

arch/arm/include/asm/arch-spear/clk.h

 /*
- * (C) Copyright 2010
- * Vipin Kumar, STMicroelectronics, <vipin.kumar@st.com>
+ * Copyright (C) 2010, STMicroelectronics - All Rights Reserved
+ * Author(s): Vipin Kumar, <vipin.kumar@st.com> for STMicroelectronics.
  *
  * SPDX-License-Identifier:	GPL-2.0+
  */

arch/arm/include/asm/arch-spear/hardware.h

 /*
- * (C) Copyright 2009
- * Vipin Kumar, STMicroelectronics, <vipin.kumar@st.com>
+ * Copyright (C) 2009, STMicroelectronics - All Rights Reserved
+ * Author(s): Vipin Kumar, <vipin.kumar@st.com> for STMicroelectronics.
  *
  * SPDX-License-Identifier:	GPL-2.0+
  */

include/configs/x600.h

 /*
- * (C) Copyright 2009
- * Vipin Kumar, STMicroelectronics, <vipin.kumar@st.com>
+ * Copyright (C) 2009, STMicroelectronics - All Rights Reserved
+ * Author(s): Vipin Kumar, <vipin.kumar@st.com> for STMicroelectronics.
  *
  * Copyright (C) 2012, 2015 Stefan Roese <sr@denx.de>
  *