am c80253d4: Merge "external/kernel-headers: add signalfd.h"

* commit 'c80253d4a1205fb0525e878263754ce68dc2db7c':
  external/kernel-headers: add signalfd.h
tree: 24d09cff8de38bb3189c16b134fc30c35288cb83
  1. original/
  2. CleanSpec.mk