Merge "Don't use BLKBSZSET on Linux." am: 786cb31536 am: 6de5d764fb am: 6b454d7d70 am: d200d20b07 am: 93b8767546

Original change: https://android-review.googlesource.com/c/platform/external/newfs_msdos/+/1560734

Change-Id: I6ea33e5f3494fa6de7a9f6d0d6fa7daa47018351