meta-ibm: Fix OCC hwmon paths for the 5.3 kernel

The 5.3 kernel adds an 'fsi-master' directory in front of the fsi0 and
fsi1 directories in the OCC device tree paths.  Update the OCC hwmon
file paths accordingly as those are based on that path.

(From meta-ibm rev: 696d1d3438499f974390c2c9c77fe4879509d9d1)

Signed-off-by: Matt Spinler <spinler@us.ibm.com>
Change-Id: I62b00664f2ebc18ed291d23faaf310fd15ce3e90
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>