Add `hifive_unmatched//s7` (earlier selected by default, using
`hifive_unmatched`) and `hifive_unmatched//u74` targets.
Define work-area for other 4 cores in openocd.cfg
Update twister platform white/black lists, to support new targets
Signed-off-by: Jakub Wasilewski <jwasilewski@internships.antmicro.com>
Signed-off-by: Filip Kokosinski <fkokosinski@antmicro.com>
The sample code is copied from spi_flash. To flash API, there is no
difference if the bus is spi or mspi.
Signed-off-by: Swift Tian <swift.tian@ambiq.com>