Input: ads7846 - strict_strtoul takes unsigned long

Fix sparse warning introduced by:
commit 160f1fef7e52e974489b3c70fbd4e094c06965c2 Input: convert drivers to use strict_strtoul()

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
1 file changed