This always builds the usb debug callback functions when implemented.
They get garbage collected if CONFIG_USBDEBUG is not set.
Change-Id: I33051df583645cd00d08e06774383763172d5822
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/36881
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Mike Banon <mikebdp2@gmail.com>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
c63649bdbb