scsi: use %*pb[l] to print bitmaps including cpumasks and nodemasks

scsi: use %*pb[l] to print bitmaps including cpumasks and nodemasks

printk and friends can now format bitmaps using '%*pb[l]'.  cpumask
and nodemask also provide cpumask_pr_args() and nodemask_pr_args()
respectively which can be used to generate the two printf arguments
necessary to format the specified cpu/nodemask.

* map_show()'s return value is too high by one and the function could
  modify beyond the end of the buffer when the formatted text is long
  enough.

Signed-off-by: Tejun Heo <[email protected]>
Cc: "James E.J. Bottomley" <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>