Merge patch series "fs: exfat: Add exfat port based on exfat-fuse"

Marek Vasut <marex@denx.de> says:

Import exfat-fuse libexfat, add U-Boot filesystem layer porting glue
code and wire exfat support into generic filesystem support code. This
adds exfat support to U-Boot.

Fill in generic filesystem interface for mkdir and rm commands.
Make filesystem tests test the generic interface as well as exfat,
to make sure this code does not fall apart.

Link: https://github.com/relan/exfat/commits/0b41c6d3560d
Link: https://lore.kernel.org/r/20250317031418.223019-1-marex@denx.de

diff --cc fs/fs.c
Simple merge

diff --cc test/py/tests/fs_helper.py
Simple merge