Mock: Add hard reset to PRL mock
Mock: Add hard reset to PRL mock

Add the ability to detect hard reset send through the PRL mock.  Note
that a hard reset is a transmit type, not a control or data message.

BRANCH=None
BUG=b:184764468
TEST=make -j buildall

Signed-off-by: Diana Z <cb2016afc7183e5356c690dc63b4ba817470501a@chromium.org>
Change-Id: Iac4e52a66b8282e8a0e341e65c4f437c6154fe77
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2897127
Reviewed-by: Paul Fagerburg <d8c44b60afb21c60f56d931aa690ca1cf34910c8@chromium.org>

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