Add YAML support to cros_update_firmware

Add support to use the YAML file config if present for the
cros_update_firmware script.

BUG=None
TEST=None

Change-Id: I5b4c631a421136153235fa105ff2f858c8bd617d
Reviewed-on: https://chromium-review.googlesource.com/1015885
Commit-Ready: YH Lin <yueherngl@chromium.org>
Tested-by: YH Lin <yueherngl@chromium.org>
Tested-by: C Shapiro <shapiroc@google.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: YH Lin <yueherngl@chromium.org>
1 file changed