Change touch FW noise test to 10Vpp

Our spec only requires touch devices to pass for electrical noise <=
10Vpp, but we've been testing it at 20Vpp for good measure.  For the
sake of simplicity and so we don't have to keep explaining why what's
going on to people, we should just change it to 10Vpp.  It more
obviously tests our spec that way.

BUG=chromium:620090
TEST=manually tested

Change-Id: I192ba874f83b2f2dcf0caea8b6281942198cc382
Signed-off-by: Charlie Mooney <charliemooney@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/356010
Reviewed-by: Shyh-In Hwang <josephsih@chromium.org>
1 file changed