improve enum logging
Ensure we're using an enumeration string everywhere we log one to
improve readability of the log statements.
This depends on I6850b0bb142f0ef5219a5fc07c2cb4e2c90d5779 from
phosphor-logging for `to_string` conversion support.
Tested:
Running directly on development system shows:
```
<7> TYPE=CPU, NAME=CPU SUBTYPE=CPU PATH=, FREQ=1, WSIZE=120
<7> THRESHOLD TYPE=xyz.openbmc_project.Common.Threshold.Type.Warning THRESHOLD BOUND=xyz.openbmc_project.Common.Threshold.Bound.Upper VALUE=80.000000 LOG=False TARGET=
```
Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: I5ea7a050e94833af272e79e6add716d1d3e66571
6 files changed