rules/uv4l: Don't hard code raspicam script.

rules/uv4l/fs/etc/rc.d/raspicam

@@ -0,0 +1,28 @@
+start()
+{
+    killall uv4l
+    modprobe cuse &&
+	uv4l \
+	    -nopreview \
+	    --auto-video_nr \
+	    --driver raspicam \
+	    --encoding h264 \
+	    --width 1080 \
+	    --height 720 \
+	    --framerate 20 \
+	    --quality 10 \
+	    --server-option \
+	    --port=9090 \
+	    --server-option \
+	    --max-queued-connections=30 \
+	    --server-option \
+	    --max-streams=25 \
+	    --server-option \
+	    --max-threads=29
+}
+
+stop()
+{
+    killall uv4l
+    rmmod uv4l
+}