MAINTAINERS: Cover RCU documentation

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
diff --git a/MAINTAINERS b/MAINTAINERS
index eb917e4..896e411 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -2812,6 +2812,8 @@
 Read, Copy, Update (RCU)
 M: Paolo Bonzini <pbonzini@redhat.com>
 S: Maintained
+F: docs/devel/lockcnt.txt
+F: docs/devel/rcu.txt
 F: include/qemu/rcu*.h
 F: tests/unit/rcutorture.c
 F: tests/unit/test-rcu-*.c