MAINTAINERS: erofs: add myself as reviewer

I have been doing some erofs patches. Now I have the time and would like
to help with the reviews.
Signed-off-by: Yue Hu <huyue2@coolpad.com>
Acked-by: Gao Xiang <xiang@kernel.org>
Acked-by: Chao Yu <chao@kernel.org>
Link: https://lore.kernel.org/r/20220605070133.4280-1-huyue2@coolpad.comSigned-off-by: Gao Xiang <hsiangkao@linux.alibaba.com>

MAINTAINERS

@@ -7413,6 +7413,7 @@ F:	include/video/s1d13xxxfb.h
 EROFS FILE SYSTEM
 M:	Gao Xiang <xiang@kernel.org>
 M:	Chao Yu <chao@kernel.org>
+R:	Yue Hu <huyue2@coolpad.com>
 L:	linux-erofs@lists.ozlabs.org
 S:	Maintained
 T:	git git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs.git