mmc: sdhci-acpi: Fix broken card detect for ACPI HID 80860F14

Some 80860F14 devices do not support card detect and must rely
completely on GPIO.  Presently the card detect GPIO is used
only to wake-up from runtime suspend.  Change to using
mmc_gpioid_request_cd() which will cause the SDHCI driver to
prefer the GPIO to the host controller's native card detect.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Chris Ball <chris@printf.net>