woomax: Increase power button init timeout
woomax: Increase power button init timeout

Woomax's battery takes serval seconds to come back from the cutoff
state.
Recorded about ~4 seconds, so bump the init timeout up to 5 second for
some margin as well.

BUG=b:169739759
BRANCH=zork
TEST=Verify DUT will boot up from cutoff a few seconds after AC power is
pluging in.

Signed-off-by: Michael5 Chen <efae8ab77494afb7fe65de1b400810ea0ad38b43@pegatron.corp-partner.google.com>
Change-Id: I94f412a3b8955c83c511d4073b121cd701de5168
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2455014
Reviewed-by: Denis Brockus <6b21e8190fb5e373363fb95271367073a16474ef@chromium.org>
Reviewed-by: Edward Hill <db1406b34e091703092b6b136bdfeb2c8125fc0e@chromium.org>

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