tests: Add test for riscvmatched-hello stdlib example

This test ensures the example script is still functioning and, by proxy,
does a simple test to ensure the riscvmatched board's SE workload
capabilities are still working.

Change-Id: I7c79856e84122c6737e1e9667b6e626b4622d04c
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/63591
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
1 file changed