Input: synaptics - enable InterTouch for ThinkPad T14 Gen 1

With the new RMI4 F3A support, we're now able to enable full RMI4
support for this model.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20201005114919.371592-1-hdegoede@redhat.comSigned-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

drivers/input/mouse/synaptics.c

@@ -186,6 +186,7 @@ static const char * const smbus_pnp_ids[] = {
 	"LEN2044", /* L470  */
 	"LEN2054", /* E480 */
 	"LEN2055", /* E580 */
+	"LEN2068", /* T14 Gen 1 */
 	"SYN3052", /* HP EliteBook 840 G4 */
 	"SYN3221", /* HP 15-ay000 */
 	"SYN323d", /* HP Spectre X360 13-w013dx */