evdev: Ignore joystick devices

We don't handle them in any way now and having your steering wheel move
the cursor isn't useful.  Applications can still open evdev devices and
access them directly like they already do.

src/evdev.c

@@ -445,6 +445,16 @@ evdev_handle_device(struct evdev_device *device)
 
 		ioctl(device->fd, EVIOCGBIT(EV_ABS, sizeof(abs_bits)),
 		      abs_bits);
+
+		if (TEST_BIT(abs_bits, ABS_WHEEL) ||
+		    TEST_BIT(abs_bits, ABS_GAS) ||
+		    TEST_BIT(abs_bits, ABS_BRAKE) ||
+		    TEST_BIT(abs_bits, ABS_HAT0X)) {
+			weston_log("device %s is a joystick, ignoring\n",
+				   device->devnode);
+			return 0;
+		}
+
 		if (TEST_BIT(abs_bits, ABS_X)) {
 			ioctl(device->fd, EVIOCGABS(ABS_X), &absinfo);
 			device->abs.min_x = absinfo.minimum;