MAINTAINERS: erofs: add myself as reviewer

I have been contributing to erofs for sometime and I would like to help
with code reviews as well.

Signed-off-by: Sandeep Dhavale <[email protected]>
Acked-by: Chao Yu <[email protected]>
Reviewed-by: Gao Xiang <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Gao Xiang <[email protected]>

Author: dhavale

MAINTAINERS

@@ -7941,6 +7941,7 @@ M:	Gao Xiang <[email protected]>
 M:	Chao Yu <[email protected]>
 R:	Yue Hu <[email protected]>
 R:	Jeffle Xu <[email protected]>
+R:	Sandeep Dhavale <[email protected]>
 L:	[email protected]
 S:	Maintained
 W:	https://erofs.docs.kernel.org