Makefile: switch to tilib as default MSPDEBUG_DRIVER for FET430UIF

It's robust now, and is much faster than V2 uif interface.
fatfs: convert bsp430mmc.c to unix style

The original generic/mmc.c is no longer present in ffsamples.zip, so
there's no point in trying reduce gratuitous whitespace differences when
doing so complicates git whitespace management.
fatfs: support R0.10

Two API changes, and FatFS doesn't provide a way to determine which
version is being used.  Provide a workaround.