xfs: move kernel-specific superblock validation out of libxfs

mainline inclusion
from mainline-v5.10-rc5
commit 3945ae03
category: bugfix
bugzilla: 187526,https://gitee.com/openeuler/kernel/issues/I6WKVJ

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3945ae03d822aa47584dd502ac024ae1e1eb9e2d



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A couple of the superblock validation checks apply only to the kernel,
so move them to xfs_fc_fill_super before we add the needsrepair "feature",
which will prevent the kernel (but not xfsprogs) from mounting the
filesystem.  This also reduces the diff between kernel and userspace
libxfs.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Guo Xuenan <guoxuenan@huawei.com>
Reviewed-by: Yang Erkun <yangerkun@huawei.com>
Signed-off-by: Jialin Zhang <zhangjialin11@huawei.com>