MAINTAINERS: add entry for Rust block device driver API

Add an entry for the Rust block device driver abstractions.
Signed-off-by: Andreas Hindborg <a.hindborg@samsung.com>
Link: https://lore.kernel.org/r/20240611114551.228679-4-nmi@metaspace.dkSigned-off-by: Jens Axboe <axboe@kernel.dk>

MAINTAINERS

@@ -3781,6 +3781,20 @@ F:	include/linux/blk*
 F:	kernel/trace/blktrace.c
 F:	lib/sbitmap.c
 
+BLOCK LAYER DEVICE DRIVER API [RUST]
+M:	Andreas Hindborg <a.hindborg@samsung.com>
+R:	Boqun Feng <boqun.feng@gmail.com>
+L:	linux-block@vger.kernel.org
+L:	rust-for-linux@vger.kernel.org
+S:	Supported
+W:	https://rust-for-linux.com
+B:	https://github.com/Rust-for-Linux/linux/issues
+C:	https://rust-for-linux.zulipchat.com/#narrow/stream/Block
+T:	git https://github.com/Rust-for-Linux/linux.git rust-block-next
+F:	drivers/block/rnull.rs
+F:	rust/kernel/block.rs
+F:	rust/kernel/block/
+
 BLOCK2MTD DRIVER
 M:	Joern Engel <joern@lazybastard.org>
 L:	linux-mtd@lists.infradead.org