usb: typec: intel_pmc_mux: Add dependency on ACPI

Since the driver now needs to find the IOM ACPI node, the
driver depends on ACPI. Without the dependency set, the
driver will only fail to compile when ACPI is not enabled.

Fixes: 43d596e3

 ("usb: typec: intel_pmc_mux: Check the port status before connect")
Reported-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20200916091102.27118-2-heikki.krogerus@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>