git: df42e20ac68e..510885a84ce8 - vendor/openzfs/master - vendor branch updated

From: Martin Matuska <mm_at_FreeBSD.org>
Date: Sun, 12 Dec 2021 02:03:34 UTC
The branch vendor/openzfs/master has been updated by mm:

URL: https://cgit.FreeBSD.org/src/log/?id=df42e20ac68e..510885a84ce8

14ba514af611 ZTS: import_rewind_device_replaced reliably fails
795075e63803 Add `const` to nvlist functions to properly expose their real behavior
b6fc42b5e1ae Update "tests/README.md"
376027331d7e ZFS send/recv with ashift 9->12 leads to data corruption
435a451e5c5e Linux 5.16: block_device_operations->submit_bio now returns void
f6e22561d21a Linux 5.16: type member of iov_iter renamed iter_type
d08b99aca04d Linux 5.16: bio_set_dev is no longer a helper macro
1e767532f200 Linux 5.16: The blk-cgroup.h header is where struct blkcg_gq is defined
a78f19d3ec8e Linux 5.16: Resolve ZSTD_isError symbol collision in Linux kernel
5ece420f031b contrib/bash_completion.d: fix error spew from __zfs_match_snapshot()
9699e45d5778 Linux 5.15 compat: META (#12824)
510885a84ce8 FreeBSD supports edonr follow up