Input: synaptics - enable SMBus on ThinkPad E480 and E580

They are capable of using intertouch and it works well with
psmouse.synaptics_intertouch=1, so add them to the list.

Without it, scrolling and gestures are jumpy, three-finger pinch gesture
doesn't work and three- or four-finger swipes sometimes get stuck.

Signed-off-by: Alexander Mikhaylenko <[email protected]>
Reviewed-by: Benjamin Tissoires <[email protected]>
Cc: [email protected]
Signed-off-by: Dmitry Torokhov <[email protected]>

Author: alice-mkh

drivers/input/mouse/synaptics.c

@@ -179,6 +179,8 @@ static const char * const smbus_pnp_ids[] = {
 	"LEN0096", /* X280 */
 	"LEN0097", /* X280 -> ALPS trackpoint */
 	"LEN200f", /* T450s */
+	"LEN2054", /* E480 */
+	"LEN2055", /* E580 */
 	"SYN3052", /* HP EliteBook 840 G4 */
 	"SYN3221", /* HP 15-ay000 */
 	NULL