Revert "x86: Convert MMC to driver model"

This reverts commit ddb3ac3c716f56cead695444e65a7ba7b0946555.

With MMC converted to driver model, SCSI driver is broken due to
zero address access at (ops->read) in block_dread() function.

The fix (SCSI driver converted to DM) is ready in u-boot-dm branch,
but it is too late for this relese to get that in.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/include/mmc.h b/include/mmc.h
index 6a0ea0a..00576fa 100644
--- a/include/mmc.h
+++ b/include/mmc.h
@@ -585,6 +585,18 @@
 int mmc_get_env_addr(struct mmc *mmc, int copy, u32 *env_addr);
 int mmc_get_env_dev(void);
 
+struct pci_device_id;
+
+/**
+ * pci_mmc_init() - set up PCI MMC devices
+ *
+ * This finds all the matching PCI IDs and sets them up as MMC devices.
+ *
+ * @name:		Name to use for devices
+ * @mmc_supported:	PCI IDs to search for, terminated by {0, 0}
+ */
+int pci_mmc_init(const char *name, struct pci_device_id *mmc_supported);
+
 /* Set block count limit because of 16 bit register limit on some hardware*/
 #ifndef CONFIG_SYS_MMC_MAX_BLK_COUNT
 #define CONFIG_SYS_MMC_MAX_BLK_COUNT 65535