Input: zinitix - rename defines ZINITIX_*

The defines are sometimes named BT541_* and sometimes
ZINITIX_*, name them all ZINITIX_* because they certainly
apply to a lot more touchscreens than the BT541.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20220410120059.2583849-3-linus.walleij@linaro.org


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