f2fs: fix write pointers on zoned device after roll forward

[ Upstream commit 9dad4d96 ]

1. do roll forward recovery
2. update current segments pointers
3. fix the entire zones' write pointers
4. do checkpoint

Reviewed-by: Daeho Jeong <daehojeong@google.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>