Input: synaptics - enable InterTouch on TUXEDO InfinityBook Pro 14 v5

JIRA: https://issues.redhat.com/browse/RHEL-101770
Upstream Status: since v6.15
Tested: with the hid-tools test suite and some hardware

commit 2abc698
Author: Aditya Garg <gargaditya08@live.com>
Date:   Wed May 7 12:09:00 2025 -0700

    Input: synaptics - enable InterTouch on TUXEDO InfinityBook Pro 14 v5

    Enable InterTouch mode on TUXEDO InfinityBook Pro 14 v5 by adding
    "SYN1221" to the list of SMBus-enabled variants.

    Add support for InterTouch on SYN1221 by adding it to the list of
    SMBus-enabled variants.

    Reported-by: Matthias Eilert <kernel.hias@eilert.tech>
    Tested-by: Matthias Eilert <kernel.hias@eilert.tech>
    Signed-off-by: Aditya Garg <gargaditya08@live.com>
    Link: https://lore.kernel.org/r/PN3PR01MB9597C033C4BC20EE2A0C4543B888A@PN3PR01MB9597.INDPRD01.PROD.OUTLOOK.COM
    Cc: stable@vger.kernel.org
    Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>

Author: bentiss

drivers/input/mouse/synaptics.c

@@ -190,6 +190,7 @@ static const char * const smbus_pnp_ids[] = {
 	"LEN2054", /* E480 */
 	"LEN2055", /* E580 */
 	"LEN2068", /* T14 Gen 1 */
+	"SYN1221", /* TUXEDO InfinityBook Pro 14 v5 */
 	"SYN3003", /* HP EliteBook 850 G1 */
 	"SYN3015", /* HP EliteBook 840 G2 */
 	"SYN3052", /* HP EliteBook 840 G4 */