UPSTREAM: f2fs: allow checkpoint=disable for zoned block device

Let's allow checkpoint=disable back for zoned block device. It's very risky
as the feature relies on fsck or runtime recovery which matches the write
pointers again if the device rebooted while disabling the checkpoint.

Change-Id: I0780824d477af4e943b36e7f73ea68b4d9916604
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Bug: 454495297
(cherry picked from commit 29215a7d)