Input: trackpoint - add new TP JYT_NDT device variant id 7

The new trackpoint variant id 7 is found on Lenovo Thinkpad X14
Gen1 laptop(Product Name: 21XMA006CD), it belongs to JYT_NDT with
confirmation from Vishnu Sankar in Lenovo. now it's incorrectly
probed as Generic or Logitech PS/2 mouse.

Add the variant id 7 to match the TP_READ_ID command return
value, probe the device as trackpoint correctly.

BEFORE:
input: PS/2 Generic Mouse as /devices/platform/i8042/serio1/input/input63

AFTER:
psmouse serio1: trackpoint: JYT_NDT TrackPoint firmware: 0xa1, buttons: 3/3
input: TPPS/2 JYT_NDT TrackPoint as /devices/platform/i8042/serio1/input/input8

Signed-off-by: Yuan Yao <yaoyuan@linux.alibaba.com>
Link: https://patch.msgid.link/20261113112202.10304-2-yaoyuan@linux.alibaba.com
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>