MAINTAINERS: Add myself as SCHED_DEADLINE reviewer

As discussed with Juri and Peter.

Signed-off-by: Daniel Bristot de Oliveira <bristot@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Acked-by: Juri Lelli <juri.lelli@redhat.com>
Link: https://lore.kernel.org/r/4476a6da70949913a59dab9aacfbd12162c1fbd7.1599146667.git.bristot@redhat.com

Author: Daniel Bristot de Oliveira

MAINTAINERS

@@ -15355,6 +15355,7 @@ R:	Dietmar Eggemann <dietmar.eggemann@arm.com> (SCHED_NORMAL)
 R:	Steven Rostedt <rostedt@goodmis.org> (SCHED_FIFO/SCHED_RR)
 R:	Ben Segall <bsegall@google.com> (CONFIG_CFS_BANDWIDTH)
 R:	Mel Gorman <mgorman@suse.de> (CONFIG_NUMA_BALANCING)
+R:	Daniel Bristot de Oliveira <bristot@redhat.com> (SCHED_DEADLINE)
 L:	linux-kernel@vger.kernel.org
 S:	Maintained
 T:	git git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git sched/core