dm: arm: bcmstb: Enable driver model MMC support

For bcm7445 and bcm7260, this patch enables CONFIG_DM_MMC and updates
the bcmstb SDHCI driver to use the new driver model.  This allows
removal of SDHCI configuration handling from bcmstb.c, and eliminates
a board removal compile warning.

Signed-off-by: Thomas Fitzsimmons <fitzsim@fitzsim.org>
Reviewed-by: Stefan Roese <sr@denx.de>
diff --git a/board/broadcom/bcmstb/bcmstb.c b/board/broadcom/bcmstb/bcmstb.c
index 5632846..7f8e0f9 100644
--- a/board/broadcom/bcmstb/bcmstb.c
+++ b/board/broadcom/bcmstb/bcmstb.c
@@ -1,6 +1,7 @@
 // SPDX-License-Identifier: GPL-2.0+
 /*
  * (C) Copyright 2018  Cisco Systems, Inc.
+ * (C) Copyright 2019  Synamedia
  *
  * Author: Thomas Fitzsimmons <fitzsim@fitzsim.org>
  */
@@ -9,7 +10,6 @@
 #include <common.h>
 #include <asm/io.h>
 #include <asm/bootm.h>
-#include <mach/sdhci.h>
 #include <mach/timer.h>
 #include <mmc.h>
 #include <fdtdec.h>
@@ -80,69 +80,6 @@
 	 */
 }
 
-static const phys_addr_t bcmstb_sdhci_address(u32 alias_index)
-{
-	int node = 0;
-	int ret = 0;
-	char sdhci[16] = { 0 };
-	const void *fdt = gd->fdt_blob;
-	const char *path = NULL;
-	struct fdt_resource resource = { 0 };
-
-	if (!fdt) {
-		printf("%s: Invalid gd->fdt_blob\n", __func__);
-		return 0;
-	}
-
-	node = fdt_path_offset(fdt, "/aliases");
-	if (node < 0) {
-		printf("%s: Failed to find /aliases node\n", __func__);
-		return 0;
-	}
-
-	sprintf(sdhci, "sdhci%d", alias_index);
-	path = fdt_getprop(fdt, node, sdhci, NULL);
-	if (!path) {
-		printf("%s: Failed to find alias for %s\n", __func__, sdhci);
-		return 0;
-	}
-
-	node = fdt_path_offset(fdt, path);
-	if (node < 0) {
-		printf("%s: Failed to resolve BCMSTB SDHCI alias\n", __func__);
-		return 0;
-	}
-
-	ret = fdt_get_named_resource(fdt, node, "reg", "reg-names",
-				     "host", &resource);
-	if (ret) {
-		printf("%s: Failed to read BCMSTB SDHCI host resource\n",
-		       __func__);
-		return 0;
-	}
-
-	return resource.start;
-}
-
-int board_mmc_init(bd_t *bis)
-{
-	phys_addr_t sdhci_base_address = 0;
-
-	sdhci_base_address = bcmstb_sdhci_address(CONFIG_BCMSTB_SDHCI_INDEX);
-
-	if (!sdhci_base_address) {
-		sdhci_base_address = BCMSTB_SDHCI_BASE;
-		printf("%s: Assuming BCMSTB SDHCI address: 0x%p\n",
-		       __func__, (void *)sdhci_base_address);
-	}
-
-	debug("BCMSTB SDHCI base address: 0x%p\n", (void *)sdhci_base_address);
-
-	bcmstb_sdhci_init(sdhci_base_address);
-
-	return 0;
-}
-
 int timer_init(void)
 {
 	gd->arch.timer_rate_hz = readl(BCMSTB_TIMER_FREQUENCY);