locking: MAINTAINERS: Start watching Rust locking primitives

It makes sense to add Rust locking primitives under the watch of general
locking primitives maintainers. This will encourage more reviews and
find potential issues earlier. Hence add related Rust files into the
LOCKING PRIMITIVES entry in MAINTAINERS.

While we are at it, change the role of myself into the maintainer of
LOCKDEP and RUST to reflect my responsibility for the corresponding
code.

Acked-by: Miguel Ojeda <[email protected]>
Acked-by: Peter Zijlstra (Intel) <[email protected]>
Acked-by: Ingo Molnar <[email protected]>
Signed-off-by: Boqun Feng <[email protected]>
https://lore.kernel.org/lkml/[email protected]/

Author: fbq

MAINTAINERS

@@ -13423,8 +13423,8 @@ LOCKING PRIMITIVES
 M:	Peter Zijlstra <[email protected]>
 M:	Ingo Molnar <[email protected]>
 M:	Will Deacon <[email protected]>
+M:	Boqun Feng <[email protected]> (LOCKDEP & RUST)
 R:	Waiman Long <[email protected]>
-R:	Boqun Feng <[email protected]> (LOCKDEP)
 L:	[email protected]
 S:	Maintained
 T:	git git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git locking/core
@@ -13438,6 +13438,11 @@ F:	include/linux/seqlock.h
 F:	include/linux/spinlock*.h
 F:	kernel/locking/
 F:	lib/locking*.[ch]
+F:	rust/helpers/mutex.c
+F:	rust/helpers/spinlock.c
+F:	rust/kernel/sync/lock.rs
+F:	rust/kernel/sync/lock/
+F:	rust/kernel/sync/locked_by.rs
 X:	kernel/locking/locktorture.c
 
 LOGICAL DISK MANAGER SUPPORT (LDM, Windows 2000/XP/Vista Dynamic Disks)