buildroot

configs/olimex_imx233_olinuxino: bump kernel to version 3.17

The audio patch has not been upstreamed and no longer applies.

[Peter: explain why patch is dropped]
Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>