Import phosphor-logging header files from new directory.
Import phosphor-logging header files from new directory.

Phase2: Changing the phosphor-logging header files import from
base dir to files under phosphor-logging folder. Once all projects
import from the new dir, the files in the base dir will be deleted.

Change-Id: I722b5906af45814c32a8717759e57c90c33cd88f
Signed-off-by: Saqib Khan <3a488dd8d375bc56a989c878788df58c1e32a844@us.ibm.com>

openbmc/openbmc-build-scripts,openbmc/openbmc-build-scripts