Update SiFive IAR demo to support vectored interrupts. This is a near copy of https://github.com/FreeRTOS/FreeRTOS/pull/797.
Signed-off-by: Gaurav Aggarwal <aggarg@amazon.com>
Co-authored-by: Gaurav Aggarwal <aggarg@amazon.com>
Update the SiFive HiFive IAR project
1. Update to the latest toolchain.
2. Add the prints needed by CI.
Signed-off-by: Gaurav Aggarwal <aggarg@amazon.com>