acpi: mmc: Generate ACPI info for the PCI SD Card

Write required information into the SSDT to describe the SD card
card-detect pin. Since the required GPIO properties are not present in
the device-tree binding, set them manually for now.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Wolfgang Wallner <wolfgang.wallner@br-automation.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>