MAINTAINERS: erofs: add myself as reviewer

I have a solid background in file systems and since much of my
recent work has focused on EROFS, I am familiar with it. Now I
have the time and am willing to help review EROFS patches.

I hope my participation can be helpful to the EROFS patch review
process.

Signed-off-by: Hongbo Li <lihongbo22@huawei.com>
Acked-by: Chao Yu <chao@kernel.org>
Acked-by: Gao Xiang <xiang@kernel.org>
Link: https://lore.kernel.org/r/20250424030653.3308358-1-lihongbo22@huawei.com
Signed-off-by: Gao Xiang <xiang@kernel.org>

Author: Hongbo Li

MAINTAINERS

@@ -8726,6 +8726,7 @@ M:	Chao Yu <chao@kernel.org>
 R:	Yue Hu <zbestahu@gmail.com>
 R:	Jeffle Xu <jefflexu@linux.alibaba.com>
 R:	Sandeep Dhavale <dhavale@google.com>
+R:	Hongbo Li <lihongbo22@huawei.com>
 L:	linux-erofs@lists.ozlabs.org
 S:	Maintained
 W:	https://erofs.docs.kernel.org