xtensa: make sample_controller runnable on QEMU

Add QEMU_CPU_TYPE for the sample_controller, so that zephyr image could
be run on QEMU with sample_controller core.

Change-Id: Id9e97a43c4b7921142289dcf97ff782993ca0463
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
1 file changed