clk: davinci: Use the correct style for SPDX License Identifier

This patch corrects the SPDX License Identifier style in header files related to Clock Drivers for Davinci Socs. For C header files Documentation/process/license-rules.rst mandates C-like comments (opposed to C source files where C++ style should be used)

Changes made by using a script provided by Joe Perches here:
https://lkml.org/lkml/2019/2/7/46

---
 drivers/clk/davinci/pll.h | 2 +-
 drivers/clk/davinci/psc.h | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

index 7cc354dd29e2..c2a453caa131 100644
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * Clock driver for TI Davinci PSC controllers
  *

index cc5614567a70..69070f834391 100644
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * Clock driver for TI Davinci PSC controllers
  *

2.17.1