xfs: skip test that want to mdrestore to block devices on zoned devices

xfs: skip test that want to mdrestore to block devices on zoned devices

mdrestore doesn't work on zoned device, so skip tests using to
pre-populate a file system image.

This was previously papered over by requiring fallocate, which got
removed in commit eff1baf42a79 ("common/populate: drop fallocate mode 0
requirement").

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Zorro Lang <zlang@kernel.org>