MAINTAINERS: Update maintainers for new Documentation/litmus-tests

This commit adds Joel Fernandes as official LKMM reviewer.

Acked-by: Boqun Feng <[email protected]>
Acked-by: Andrea Parri <[email protected]>
Signed-off-by: Joel Fernandes (Google) <[email protected]>
[ paulmck: Apply Joe Perches alphabetization feedback. ]
Signed-off-by: Paul E. McKenney <[email protected]>

Author: joelagnel

MAINTAINERS

@@ -9960,6 +9960,7 @@ M:	Luc Maranget <[email protected]>
 M:	"Paul E. McKenney" <[email protected]>
 R:	Akira Yokosawa <[email protected]>
 R:	Daniel Lustig <[email protected]>
+R:	Joel Fernandes <[email protected]>
 L:	[email protected]
 L:	[email protected]
 S:	Supported
@@ -9968,6 +9969,7 @@ F:	Documentation/atomic_bitops.txt
 F:	Documentation/atomic_t.txt
 F:	Documentation/core-api/atomic_ops.rst
 F:	Documentation/core-api/refcount-vs-atomic.rst
+F:	Documentation/litmus-tests/
 F:	Documentation/memory-barriers.txt
 F:	tools/memory-model/