MAINTAINERS: Add Alyssa Rosenzweig as M1 reviewer

Add myself as a reviewer for Asahi Linux (Apple M1) patches.

I would like to be CC'ed on Asahi Linux patches for review and testing.
I am also collecting Asahi Linux patches downstream, rebasing on
linux-next periodically, and would like to be notified of what to
cherry-pick from lists.

Cc: Hector Martin <marcan@marcan.st>
Cc: Sven Peter <sven@svenpeter.dev>
Acked-by: Hector Martin <marcan@marcan.st>
Acked-by: Sven Peter <sven@svenpeter.dev>
Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>

MAINTAINERS

@@ -1275,6 +1275,7 @@ F:	drivers/input/mouse/bcm5974.c
 
 APPLE DART IOMMU DRIVER
 M:	Sven Peter <sven@svenpeter.dev>
+R:	Alyssa Rosenzweig <alyssa@rosenzweig.io>
 L:	iommu@lists.linux-foundation.org
 S:	Maintained
 F:	Documentation/devicetree/bindings/iommu/apple,dart.yaml
@@ -1711,6 +1712,7 @@ F:	drivers/*/*alpine*
 
 ARM/APPLE MACHINE SUPPORT
 M:	Hector Martin <marcan@marcan.st>
+R:	Alyssa Rosenzweig <alyssa@rosenzweig.io>
 L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
 S:	Maintained
 W:	https://asahilinux.org