bcachefs: __bch2_run_recovery_passes()

bcachefs: __bch2_run_recovery_passes()

Consolidate bch2_run_recovery_passes() and
bch2_run_online_recovery_passes(), prep work for automatically
scheduling and running recovery passes in the background.

- Now takes a mask of which passes to run, automatic background repair
  will pass in sb.recovery_passes_required.

- Skips passes that are failing: a pass that failed may be reattempted
  after another pass succeeds (some passes depend on repair done by
  other passes for successful completion).

- bch2_recovery_passes_match() helper to skip alloc passes on a
  filesystem without alloc info.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>