[PATCH v3 2/2] Input: synaptics - enable InterTouch for ThinkPad P1/X1E gen 2

With the new RMI4 F3A support, we're now able to enable full RMI4
support for this model. We also tidy up the comments a bit, as the X1E
is essentially the same computer as the P1.

Acked-by: Lyude Paul <lyude@redhat.com>
Cc: Vincent Huang <redacted>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
---
 drivers/input/mouse/synaptics.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/input/mouse/synaptics.c b/drivers/input/mouse/synaptics.c
index 8a54efd6eb95..bf0f3fdf10d9 100644
--- a/drivers/input/mouse/synaptics.c
+++ b/drivers/input/mouse/synaptics.c

@@ -179,7 +179,8 @@ static const char * const smbus_pnp_ids[] = {
 	"LEN0093", /* T480 */
 	"LEN0096", /* X280 */
 	"LEN0097", /* X280 -> ALPS trackpoint */
-	"LEN0099", /* X1 Extreme 1st */
+	"LEN0099", /* X1 Extreme Gen 1 / P1 Gen 1 */
+	"LEN0402", /* X1 Extreme Gen 2 / P1 Gen 2 */
 	"LEN009b", /* T580 */
 	"LEN200f", /* T450s */
 	"LEN2044", /* L470  */

-- 
2.28.0