mkfs.f2fs: introduce some macros to simplify coding style

This patch tries to simplify coding style for readability.
Rename shortly
 o rename super_block to sb

And, introduce some macros.
 o set/get_cp
 o set/get_sb
 o next/prev_zone, last_zone and last_section
 o ALIGN, SEG_ALIGN and ZONE_ALIGN

Signed-off-by: Changman Lee <cm224.lee@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
4 files changed