PEL: Add missing <map> include to callouts.cpp
PEL: Add missing <map> include to callouts.cpp

This won't come for free starting in a future commit.

Signed-off-by: Matt Spinler <c000c989d08c98662d98f15448f11de169feb92d@us.ibm.com>
Change-Id: I4bdb44ab60c688d71336992bc6e97d8192931aec

openbmc/phosphor-logging,openbmc/phosphor-logging,openbmc/phosphor-logging,openbmc/phosphor-logging