mkfs.f2fs: fix name conflict for BLKDISCARD

The compile time option BLKDISCARD conflicts with ioctl code
for discard. This causes discard to fail with "Info: This
device doesn't support TRIM". Rename compile time option
to WITH_BLKDISCARD.

Signed-off-by: Sankalp Bose <sankalp@tuxera.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
3 files changed