BUTTERFLY-FIRMWARE: vboot_reference: Fix keyboard input lag at confirm screen.

Changing languages is terribly slow at the confirm screen, when
switching from dev to normal. Reduce sleep time to improve user

TEST=boot in dev, hit space, hit arrows rapidly to change language,
observe no lag.
BRANCH=butterfly, stout

Change-Id: Ic0a5d274bccb36702e3fad76a1cee9c0921a0450
Original-Change-Id: I0943debc31d78dcfce87e7f7d4537ae47f5f8cfd
Reviewed-on: https://gerrit.chromium.org/gerrit/36987
Tested-by: Shawn Nematbakhsh <shawnn@google.com>
Reviewed-by: Shawn Nematbakhsh <shawnn@google.com>
1 file changed