flash_ec: Wait 1s before flashing meowth.
flash_ec: Wait 1s before flashing meowth.

Meowth also seems to take enough power when flashing without a battery.
Zoombini has a similar issue, and the fix is to wait 1s to let the
voltage level stabilize before flashing.

This commit just waits 1 second before flashing.

BUG=b:65694390
BRANCH=None
TEST=./util/flash_ec --board meowth;  Verify it succeeds without a battery.

Change-Id: Ida34a7eb923187940afe05a32d200b48e71aaa9f
Signed-off-by: Aseda Aboagye <12c9b286316a940fd31c24070da5ab64cdd4d0e7@google.com>
Reviewed-on: https://chromium-review.googlesource.com/894370
Commit-Ready: Aseda Aboagye <12c9b286316a940fd31c24070da5ab64cdd4d0e7@chromium.org>
Tested-by: Aseda Aboagye <12c9b286316a940fd31c24070da5ab64cdd4d0e7@chromium.org>
Reviewed-by: Caveh Jalali <08e24a66aefda7a55ca7d73f8903e0fb16eec763@google.com>

coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec