cheza: start using higher priority task
cheza: start using higher priority task

The last step to convert cheze over to using a higher priority USB-PD
interrupt is to update the interrupt handler

BRANCH=none
BUG=b:117498337
TEST=verified that HARD RST goes away after Source_Cap

Change-Id: Ibb4afec382845e6505425778473c795909a3c9b1
Signed-off-by: Jett Rink <9d4aef0593e6843318d99df31597fb6153b89787@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/1283240
Tested-by: Wai-Hong Tam <04b587fdf5845741a0c5a8b9cd59ca72d73ef8fc@google.com>
Reviewed-by: Wai-Hong Tam <04b587fdf5845741a0c5a8b9cd59ca72d73ef8fc@google.com>

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