Add InternalFailure error for MAC Address

Using the InternalFailure error here:
https://github.com/openbmc/phosphor-networkd/blob/057ff0daf0fd4d2617c5e50e2f9a095e06e3c24b/ethernet_interface.cpp#L710

sdbusplus now supports errors on properties.

Change-Id: I8dc9d8df5203ceca1ef33edf9a9a96eb1fa0691e
Signed-off-by: Gunnar Mills <gmills@us.ibm.com>
1 file changed