mmc: Support generic PCI SD host controller

This changes pci_mmc driver to use PCI_CLASS_SYSTEM_SDHCI instead of
individual vendor id & device id pair to support generic PCI SD host
controller.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>

drivers/mmc/pci_mmc.c

@@ -64,12 +64,7 @@ U_BOOT_DRIVER(pci_mmc) = {
 };
 
 static struct pci_device_id mmc_supported[] = {
-	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BYT_SDIO) },
-	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BYT_SD) },
-	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BYT_EMMC2) },
-	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_QRK_SDIO) },
-	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_TCF_SDIO_0) },
-	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_TCF_SDIO_1) },
+	{ PCI_DEVICE_CLASS(PCI_CLASS_SYSTEM_SDHCI << 8, 0xffff00) },
 	{},
 };