Herobrine: Add debug messages to show the HPD change
Herobrine: Add debug messages to show the HPD change

Show the HPD change message to help debugging issues.

BRANCH=None
BUG=b:170598152,b:209092452
TEST=Plug and unplug a Type-C monitor and check the messages.

Change-Id: I5ee5252ef7a50f976ee9ff0077aaa6df774f5013
Signed-off-by: Wai-Hong Tam <04b587fdf5845741a0c5a8b9cd59ca72d73ef8fc@google.com>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/3503403
Reviewed-by: Stephen Boyd <eeb31768d3df4444d6703fd44d40e628b44c8e77@chromium.org>

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