block: swim3: Convert timers to use timer_setup()

block: swim3: Convert timers to use timer_setup()

In preparation for unconditionally passing the struct timer_list pointer to
all timer callbacks, switch to using the new timer_setup() and from_timer()
to pass the timer pointer explicitly.

Cc: Jens Axboe <[email protected]>
Cc: Johannes Thumshirn <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Arvind Yadav <[email protected]>
Signed-off-by: Kees Cook <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>