Add unit test for src/device/i2c.c module.
This patch is also used as an example for incorporating Cmocka mocking
feature (-wrap linker flag).
Signed-off-by: Jan Dabros <jsd@semihalf.com>
Change-Id: I2eeb565aacc724ae3b9f5c76ef4b98ef695416d6
Reviewed-on: https://review.coreboot.org/c/coreboot/+/40539
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Reviewed-by: Paul Fagerburg <pfagerburg@chromium.org>
Jan Dabros