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 <[email protected]> Reviewed-on: https://chromium-review.googlesource.com/356010 Reviewed-by: Shyh-In Hwang <[email protected]>