staging: erofs:converting all 'unsigned' to 'unsigned int'

Fixed checkpatch warnings: converting all 'unsigned' to 'unsigned int'

Signed-off-by: Pratik Shinde <pratikshinde320@gmail.com>
Reviewed-by: Gao Xiang <gaoxiang25@huawei.com>
Link: https://lore.kernel.org/r/20190715122127.13733-1-pratikshinde320@gmail.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>