Merge changes...

Merge changes I28ce0288,I86482e16,Ib957fae8,I1a27459b,I3e9c53c3,I91082f58,I395e5361,I6a01ff6f,I0ca31094,I56408690,Ieabdcb1c,Ib9b21771,I10927f48,I49ba2ba2

* changes:
  Fix fastbootd's <linux/kexec.h> reference.
  Fastbootd: Comments and general cleaning
  Fastbootd: General fixes and changes
  Revert "Revert "Fastbootd: flashing certification""
  Fastbootd: auto ssh server start
  Fastbootd: network auto discovery
  Fastbootd: socket and network transport
  Fastbootd: build breakage fix
  Revert "Fastbootd: flashing certification"
  Fastbootd: flashing certification
  Fastbootd: improved operations on gpt
  Remove a homebrew mmap64.
  Fastbootd: fixed missing file in Android.mk
  fastbootd: erase, boot and partitioning commands