Unmerged DreamCast Drivers

Hello, the LinuxDC project got abandoned long ago (and got merged with
the main kernel), with a few drivers that were never merged.

The VMUFAT filesystem, to get the DreamCast VMU filesystem working:
https://www.uwsg.indiana.edu/hypermail/linux/kernel/0904.1/02520.html
, a reply with a critique shows at
https://www.uwsg.indiana.edu/hypermail/linux/kernel/0904.1/02545.html
saying that making it not a dependency for the VMU would be
problematic for promoting it's use as a general purpose filesystem,
but being useful for emulator developers. VMUFAT support would be nice
for having Linux on the Dreamcast be able to manage saves, especially
if a homescreen replacement is developed. I think it's better to keep
it Dreamcast-dependant for now, due to security concerns, and due to
having little use outside the Dreamcast, as emulator users can use a
userspace FUSE driver.

Other than that, two full drivers for the VMU's display and the SEGA
LAN Adapter (HIT-0300) have been created, but were not merged nor
pulled, located on the open directory site
https://linuxdc.sourceforge.net/berger/ .

I don't expect the LinuxDC project to return officially, maybe an
unofficial revival, but it's better to get these drivers reviewed and
submitted, and not have it unmerged indefinitely.