rcu/tree: Convert to SPDX license identifier

Replace the license boiler plate with a SPDX license identifier.
While in the area, update an email address.

Signed-off-by: Paul E. McKenney <paulmck@linux.ibm.com>
[ paulmck: Update .h file SPDX comment format per Joe Perches. ]
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Paul E. McKenney 2019-01-17 10:23:39 -08:00
commit 22e4092531
4 changed files with 9 additions and 61 deletions