Data in the file system consists of fixed-length disk blocks.
The size of the blocks (also known as file system sector size)
affects disk space usage and performance.
The value of blocks can be 4 KB, 8 KB, 16 KB, 32 KB, or 64 KB.
Change-Id: I95a9aa7e071c470c21dc0fa009ba96a7c7439ce6
Implements: blueprint huawei-driver-block-size-config