hal/nrf52.c:
- Use static volatile buffer for UARTE DMA source instead of stack
variable address. GCC 15.2 with -Os optimized away the store to the
stack slot, causing the DMA to read zeros.
- Set UART0_ENABLE to 4 (UARTE mode) per NRF52840 datasheet.
tools/test-expect-version/test-expect-version.c:
- Replace deprecated termio.h and linux/serial.h with sys/ioctl.h
for compatibility with newer glibc.
tools/renode/docker-test.sh:
- Remove unused RENODE_CHECKOUT env var.
tools/scripts/renode-test-update.sh:
- Add robust UART wait functions with timeouts and liveness checks.
- Log Renode output to /tmp/renode.log for diagnostics on failure.
- Use run_expect_version helper with configurable timeout.