Make QEMU killable with CTRL+C

When running `make test`, it was not possible to exit early by sending
a SIGINT by pressing CTRL+C. This is because QEMU forwards that signal
into the guest by default.

Add settings which forward stdin/stdout via serial but do not forward
SIGINT. Tests can now be killed mid-way.

Change-Id: I07199ad801e1efdd3ebf81c54fbf8c8d682c0b45
1 file changed
tree: 484efdf2db2f929d51c1d801854b867c5fddf413
  1. Makefile
  2. aarch64-unit-tests/