runqemu: Replaced "stty sane" with saved stty settings
stty manual says :
"sane - Resets all modes to reasonable values for interactive terminal use."
But reasonable isn't the most viable solution, because we want to keep the
original stty settings before running runqemu. Saving the stty settings and
setting them at the end of the runqemu script solves the terminal
settings differences after the script ran.
[Yocto #4512]
Signed-off-by: Andrei Dinu <andrei.adrianx.dinu@intel.com>
[Added filename info in commit subject - sgw] Signed-off-by: Saul Wold <sgw@linux.intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
