Get the crctest results properly aligned

Before:

md5:	534.03 MB/sec
crc64:	392.31 MB/sec
crc32:	352.36 MB/sec
crc32c:	8225.43 MB/sec
crc16:	384.46 MB/sec
crc7:	386.79 MB/sec
sha1:	381.15 MB/sec
sha256:	186.47 MB/sec
sha512:	303.18 MB/sec
xxhash:	6329.90 MB/sec

After:

md5:	  548.59 MB/sec
crc64:	  381.45 MB/sec
crc32:	  347.89 MB/sec
crc32c:	 8577.36 MB/sec
crc16:	  396.56 MB/sec
crc7:	  396.72 MB/sec
sha1:	  385.87 MB/sec
sha256:	  206.60 MB/sec
sha512:	  314.62 MB/sec
xxhash:	 6293.64 MB/sec

Signed-off-by: Jens Axboe <axboe@fb.com>