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.com


Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com>