kernel: Fix paths for upstream kernel fsi driver
kernel: Fix paths for upstream kernel fsi driver

While this may break users of the old kernel driver ABI, in reality they
are already broken since d4f73e9be635 ("Reads and writes to the FSI bus
are in bus-endian format, so we need to convert.") which hardcodes the
modern ABI's endian requirements.

Signed-off-by: Joel Stanley <4816dabf8db1bc6cac35b3a24cab2ff844b5b0c7@jms.id.au>

open-power/pdbg,open-power/pdbg,open-power/pdbg