MAINTAINERS: add Amir as xfs maintainer for 5.10.y

stable inclusion
from stable-v5.10.128
commit 52dc7f3f6fa151f5d64b3e6fe95369c21600e72c
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I5YM2H

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=52dc7f3f6fa151f5d64b3e6fe95369c21600e72c

--------------------------------

This is an attempt to direct the bots and human that are testing
LTS 5.10.y towards the maintainer of xfs in the 5.10.y tree.

This is not an upstream MAINTAINERS entry and 5.15.y and 5.4.y will
have their own LTS xfs maintainer entries.

Update Darrick's email address from upstream and add Amir as xfs
maintaier for the 5.10.y tree.
Suggested-by: NDarrick J. Wong <djwong@kernel.org>
Link: https://lore.kernel.org/linux-xfs/Yrx6%2F0UmYyuBPjEr@magnolia/Signed-off-by: NAmir Goldstein <amir73il@gmail.com>
Reviewed-by: NDarrick J. Wong <djwong@kernel.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>
Reviewed-by: NWei Li <liwei391@huawei.com>

MAINTAINERS

@@ -19327,7 +19327,8 @@ F:	arch/x86/xen/*swiotlb*
 F:	drivers/xen/*swiotlb*
 
 XFS FILESYSTEM
-M:	Darrick J. Wong <darrick.wong@oracle.com>
+M:	Amir Goldstein <amir73il@gmail.com>
+M:	Darrick J. Wong <djwong@kernel.org>
 M:	linux-xfs@vger.kernel.org
 L:	linux-xfs@vger.kernel.org
 S:	Supported