MAINTAINERS: erofs: update my email address

Old email address will be invalid after a few days, update it
to kernel.org one.

Link: https://lore.kernel.org/r/20210627133229.8025-1-chao@kernel.org
Signed-off-by: Chao Yu <chao@kernel.org>
Acked-by: Gao Xiang <xiang@kernel.org>
Signed-off-by: Gao Xiang <xiang@kernel.org>

Author: chaseyu

MAINTAINERS

@@ -6771,7 +6771,7 @@ F:	include/video/s1d13xxxfb.h
 
 EROFS FILE SYSTEM
 M:	Gao Xiang <xiang@kernel.org>
-M:	Chao Yu <yuchao0@huawei.com>
+M:	Chao Yu <chao@kernel.org>
 L:	linux-erofs@lists.ozlabs.org
 S:	Maintained
 T:	git git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs.git