wifi: iwlwifi: fw: fix compile w/o CONFIG_ACPI

The user of this function passes a pointer to a value that
doesn't exist when compiled w/o CONFIG_ACPI. Since we don't
need the value then, make the non-ACPI version a macro to
allow it to still build.

Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202402031454.syX4cSGN-lkp@intel.com/


Fixes: c4c95454 ("wifi: iwlwifi: implement WPFC ACPI table loading")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>