gpio: pca953x: Drop unneeded ACPI_PTR()

ACPI_PTR() becomes a no-op when !CONFIG_ACPI. This is not needed since
we always have ID table enabled. Moreover, in the mentioned case compiler
will complain about defined but not used variable.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20200520211916.25727-3-andriy.shevchenko@linux.intel.com


Signed-off-by: Linus Walleij <linus.walleij@linaro.org>