staging: most: fix improper SPDX-License comment style

This patch uses '/*' in the SPDX comment.

Signed-off-by: Christian Gromm <christian.gromm@microchip.com>
Link: https://lore.kernel.org/r/1574697096-2942-2-git-send-email-christian.gromm@microchip.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>