Revert "mkfs.f2fs: 512 UTF-16 characters for label"
Revert "mkfs.f2fs: 512 UTF-16 characters for label"

The mkfs.f2fs gets 512 characters, which will be recorded as UTF-16 characters.

This reverts commit fb5eef1d7e4060d9c5a913514c49b260c29d3ed2.

TurboROM/external_f2fs-tools,seamlik/f2fs-tools,TurboROM/external_f2fs-tools,seamlik/f2fs-tools