Input: Add support for ILITEK Lego Series

Add support for ILITEK Lego series of touch devices.
Lego series includes ILITEK 213X/23XX/25XX.

Tested/passed with evaluation board with ILI2520/2322 IC.

Signed-off-by: Joe Hung <joe_hung@ilitek.com>
Link: https://lore.kernel.org/r/20210324122601.125873-2-joe_hung@ilitek.com


Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>