util.h: make log_() a proper function
util.h: make log_() a proper function

log_() doesn't strictly need to be a macro, and making it one makes gcc
analyzer output harder to read, so make it a real function.

Signed-off-by: Peter Jones <2e0a021e603479ff81838c00c3b770daca4e0214@redhat.com>

vathpela/efivar-devel