rust: hrtimer: add maintainer entry

Add Andreas Hindborg as maintainer for Rust `hrtimer` abstractions. Also
add Boqun Feng as reviewer.

Acked-by: Boqun Feng <boqun.feng@gmail.com>
Acked-by: Frederic Weisbecker <frederic@kernel.org>
Reviewed-by: Benno Lossin <benno.lossin@proton.me>
Signed-off-by: Andreas Hindborg <a.hindborg@kernel.org>
Reviewed-by: Lyude Paul <lyude@redhat.com>
Link: https://lore.kernel.org/r/20250224-hrtimer-v3-v6-12-rc2-v9-13-5bd3bf0ce6cc@kernel.org

Author: Andreas Hindborg

MAINTAINERS

@@ -10355,6 +10355,16 @@ F:	kernel/time/timer_list.c
 F:	kernel/time/timer_migration.*
 F:	tools/testing/selftests/timers/
 
+HIGH-RESOLUTION TIMERS [RUST]
+M:	Andreas Hindborg <a.hindborg@kernel.org>
+R:	Boqun Feng <boqun.feng@gmail.com>
+L:	rust-for-linux@vger.kernel.org
+S:	Supported
+W:	https://rust-for-linux.com
+B:	https://github.com/Rust-for-Linux/linux/issues
+F:	rust/kernel/time/hrtimer.rs
+F:	rust/kernel/time/hrtimer/
+
 HIGH-SPEED SCC DRIVER FOR AX.25
 L:	linux-hams@vger.kernel.org
 S:	Orphan