Input: ads7846 - Fix usage of match data

device_get_match_data() returns the match data directly, fix
this up and fix the probe crash.

Fixes: 767d8336

 ("Input: ads7846 - Convert to use software nodes")
Reported-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Link: https://lore.kernel.org/r/20230606191304.3804174-1-linus.walleij@linaro.org


Signed-off-by: Arnd Bergmann <arnd@arndb.de>