tree fb0aab3fb2b86cf9fde319b521cbf125eaa7d55f
parent c2c32a2a2c210d7d64441ae1a1ec85cbcb161380
author Patrick Williams <patrick@stwcx.xyz> 1708962454 -0600
committer Patrick Williams <patrick@stwcx.xyz> 1708962457 -0600

lg2: allow enumeration formatting

A good amount of code is using something like `std::to_underlying` to
convert enums to a value for output with lg2.  Add support directly in
the library.

Tested:
Modified phosphor-health-monitor with one enum with a `to_string`
conversion and one without:
```
<7> TYPE=CPU, NAME=CPU SUBTYPE=Enum(1) PATH=, FREQ=1, WSIZE=120
<7> TYPE=CPU, NAME=CPU_Kernel SUBTYPE=Enum(0) PATH=, FREQ=1, WSIZE=120
```

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: I0644ff00fb7ff9b20daaf4ea5f9564b9b9e83237