net: stmmac: Use the correct style for SPDX License Identifier
This patch corrects the SPDX License Identifier style in
header files related to STMicroelectronics based Multi-Gigabit
Ethernet driver. 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.
Suggested-by: Joe Perches <joe at perches.com>
Signed-off-by: Nishad Kamdar <nishadkamdar at gmail.com>
Signed-off-by: David S. Miller <davem at davemloft.net>
UnifiedSplitRaw
