The paths of sysfs nodes are different across kernel versions
and i2c bus assignement. Runtime search the correct ones.
Test: Manual test on device. Confirm that file reads related to
file path error do not trigger error.
Bug: 318820040
Change-Id: I1217fcea012865cebe12c935917f12903003fd5b
(ported from commit 0b768c8fbe1e59a4b9efa7b5f7b6a017a81d46fb)
Signed-off-by: RD Babiera <rdbabiera@google.com>
