btrfs: tiny makefile cleanup

use normal kbuild syntax to build acl.o conditinally and remove comment
out lines.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
1 file changed
tree: 253a42bd69784a6a3de7c2dd7cb9b8574df5ce08
  1. fs/