volteer: Connect up the USB-C interrupts

Add support for the interrupts on volteer. Enable the PPC interrupt
CONFIG also.

BUG=b:175434113
TEST=build on volteer

Signed-off-by: Simon Glass <sjg@chromium.org>
Change-Id: Ia3ed850efa1404b18844a8656b2fe44a033a79c1
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/zephyr-chrome/+/2618740
Reviewed-by: Keith Short <keithshort@chromium.org>
Reviewed-by: Jack Rosenthal <jrosenth@chromium.org>
2 files changed