These are helpful usb device accessors and helpers that
are later used for the so-called Raiden debugger programmer.
BUG=b:143389556
BRANCH=none
TEST=builds
Change-Id: Ic928220fc919fe4958c8150e61e11470dac88f13
Signed-off-by: Edward O'Callaghan <quasisec@google.com>
Reviewed-on: https://review.coreboot.org/c/flashrom/+/38936
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
