osmoocm-bb-host-master: Build virtphy, not only trxcon

There are some BTS_Tests which (so far) don't yet work with trxcon
hence require virtphy.

Change-Id: I0aabd73e2778b9144aa7945f25cae5cefea4111b

osmocom-bb-host-master/Dockerfile

@@ -34,6 +34,11 @@ RUN	cd osmocom-bb/src/host/trxcon && \
 	./configure && \
 	make -j8 install
 
+RUN	cd osmocom-bb/src/host/virt_phy && \
+	autoreconf -fi && \
+	./configure && \
+	make -j8 install
+
 RUN	mkdir -p /data/unix
 
 VOLUME	/data