evdev: Clear touch capability if we see a mouse-type button

If an input device has BTN_LEFT (typically) it's not a touch screen but
a touch pad.

src/evdev.c

@@ -524,16 +524,16 @@ evdev_handle_device(struct evdev_device *device)
 				break;
 			}
 		}
+		if (TEST_BIT(key_bits, BTN_TOUCH)) {
+			device->caps |= EVDEV_TOUCH;
+		}
 		for (i = BTN_MISC; i < BTN_JOYSTICK; i++) {
 			if (TEST_BIT(key_bits, i)) {
 				device->caps |= EVDEV_BUTTON;
+				device->caps &= ~EVDEV_TOUCH;
 				break;
 			}
 		}
-		if (TEST_BIT(key_bits, BTN_TOUCH)) {
-			device->caps |= EVDEV_TOUCH;
-		}
-
 	}
 	if (TEST_BIT(ev_bits, EV_LED)) {
 		device->caps |= EVDEV_KEYBOARD;