logging: switch to lg2

After switching to C++20, it is recommended to use `phosphor::lg2`
to format log, and the correct `CODE_LINE` and `CODE_FUNC` values
can be used in log tracking.

Signed-off-by: George Liu <liuxiwei@inspur.com>
Change-Id: I4aabaafe997e13c10d655a83a9ef0071ad11126e
17 files changed