gooftool: always process EC before BIOS (workaround for buggy EC)

EC on some platform is still buggy. If we leave BBS selector to LPC, rebooting
command will fail. User will end in frozen with "Rebooting" message.

As a workaround, we should always process EC before BIOS.

TEST=gooftool --finalize --db_path DBPATH --upload_method none
     flashrom -V | grep Found
     # the output is SPI(BIOS), not LPC(EC).
     reboot # success on Z*

Change-Id: I3f09b6e0f4a3017801b26b9c7dfa0bf1cc5050d2,

Review URL:
3 files changed