Apply the pre-commit hook whitespace fixes to all files in the repo. (Line endings, blank lines at end of file, trailing whitespace)
- do to not rely on integer.h types - ffsystem.c does not define ff_memcalloc, replace with ff_memalloc + memset.
This is a breaking change: applications which used diskio.h to call ff_diskio_register, will now need to include diskio_impl.h. Including diskio.h will include the original diskio.h header from FatFS library.
