g: usb_updater: fix option description and add post_reset

The new option allows the operator to explicitly request the post
reset reboot instead of immediate reboot (which is now ignored by
production cr50 images).

Also sort option descriptions and move the colons where they belong
(after command line arguments requiring additional parameters),

BRANCH=none
BUG=none
TEST=running usb_updater with -b or -d without extra parameter causes
     the return error code and the help message printed.

     running

     $ ./extra/usb_updater/usb_updater -p build/cr50/ec.bin

     results in a proper image transfer, with the following reboot of
     the chromeos device triggering cr50 reset and the new downloaded
     image running.

Change-Id: I64328973a2dfac1b78262f1ffacd677e52956d27
Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/446939
Reviewed-by: Aaron Durbin <adurbin@chromium.org>

0 files changed, 0 insertions, 0 deletions