MAINTAINERS: Add myself as scheduler topology reviewer

I've messed around the NUMA/debug bits of the scheduler toplogy in my
time at Arm, and even though I've changed ships I still intend to at the
very least review those bits.

Signed-off-by: Valentin Schneider <[email protected]>
Signed-off-by: Peter Zijlstra (Intel) <[email protected]>
Link: https://lore.kernel.org/r/[email protected]

Author: valschneider

MAINTAINERS

@@ -17508,6 +17508,7 @@ R:	Steven Rostedt <[email protected]> (SCHED_FIFO/SCHED_RR)
 R:	Ben Segall <[email protected]> (CONFIG_CFS_BANDWIDTH)
 R:	Mel Gorman <[email protected]> (CONFIG_NUMA_BALANCING)
 R:	Daniel Bristot de Oliveira <[email protected]> (SCHED_DEADLINE)
+R:	Valentin Schneider <[email protected]> (TOPOLOGY)
 L:	[email protected]
 S:	Maintained
 T:	git git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git sched/core