mfd: intel_soc_pmic: Rid compiler working for unused ACPI match table

If CONIFG_ACPI is not enabled we receive the following warning:

drivers/mfd/intel_soc_pmic_core.c:144:30:
	warning: ‘intel_soc_pmic_acpi_match’ defined but not used

This patch rids it.

Signed-off-by: Lee Jones <lee.jones@linaro.org>