iommu/arm-smmu-qcom: Protect acpi_match_platform_list() call with CONFIG_ACPI

iommu/arm-smmu-qcom: Protect acpi_match_platform_list() call with CONFIG_ACPI

The struct acpi_platform_list and function acpi_match_platform_list()
defined in include/linux/acpi.h are available only when CONFIG_ACPI is
enabled.  Add protection to fix the build issues with !CONFIG_ACPI.

Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Link: https://lore.kernel.org/r/20210609015511.3955-1-shawn.guo@linaro.org
Signed-off-by: Will Deacon <will@kernel.org>