Retry on ENODEV errnos
Retry on ENODEV errnos

This errno can be returned by certain device drivers
when they are in the process of being unbound.

Retrying will give the driver time to finish unbinding,
and phosphor-hwmon will then die off naturally as
phosphor-hwmon's lifetime is tied to the loaded driver's.

Resolves openbmc/openbmc#2401

Change-Id: Ife888f3b608d7694d22f95412a7d320377daefa4
Signed-off-by: Matt Spinler <c000c989d08c98662d98f15448f11de169feb92d@us.ibm.com>

openbmc/phosphor-hwmon,openbmc/phosphor-hwmon