fastboot: add parameter for unbuffered stderr/stdout

This is useful for writing Windows GUIs that want to parse the output of
fastboot before it exits.

Change-Id: Ic0171fe379fc4db7b65b1501e5f2e771ac7c62c4
Signed-off-by: Florian Bäuerle <florian.bae@gmail.com>
1 file changed