ARM: legoev3: convert to driver model

This converts LEGO MINDSTORMS EV3 to the driver model. MMC, SERIAL, SPI
and SPI_FLASH are converted.

The device tree contains only the minimal nodes required by U-Boot
since the size of U-Boot is limited to 256K on this device.

Signed-off-by: David Lechner <david@lechnology.com>
diff --git a/board/lego/ev3/README b/board/lego/ev3/README
index da62a64..9ad93e8 100644
--- a/board/lego/ev3/README
+++ b/board/lego/ev3/README
@@ -50,3 +50,6 @@
 If you are booting from the microSD card, it is enough to just write uboot.bin
 to the flash. If you are not using a microSD card, you will need to create an
 image file using the layout described above.
+
+IMPORTANT: The EEPROM bootloader only copies 256k, so u-boot.img must not
+exceed that size!
diff --git a/board/lego/ev3/legoev3.c b/board/lego/ev3/legoev3.c
index 423c2fa..fa099e9 100644
--- a/board/lego/ev3/legoev3.c
+++ b/board/lego/ev3/legoev3.c
@@ -25,11 +25,6 @@
 #include <asm/mach-types.h>
 #include <asm/setup.h>
 
-#ifdef CONFIG_MMC_DAVINCI
-#include <mmc.h>
-#include <asm/arch/sdmmc_defs.h>
-#endif
-
 DECLARE_GLOBAL_DATA_PTR;
 
 u8 board_rev;
@@ -38,23 +33,6 @@
 #define EEPROM_REV_OFFSET	0x3F00
 #define EEPROM_MAC_OFFSET	0x3F06
 
-#ifdef CONFIG_MMC_DAVINCI
-static struct davinci_mmc mmc_sd0 = {
-	.reg_base = (struct davinci_mmc_regs *)DAVINCI_MMC_SD0_BASE,
-	.host_caps = MMC_MODE_4BIT,     /* DA850 supports only 4-bit SD/MMC */
-	.voltages = MMC_VDD_32_33 | MMC_VDD_33_34,
-	.version = MMC_CTLR_VERSION_2,
-};
-
-int board_mmc_init(bd_t *bis)
-{
-	mmc_sd0.input_clk = clk_get(DAVINCI_MMCSD_CLKID);
-
-	/* Add slot-0 to mmc subsystem */
-	return davinci_mmc_init(bis, &mmc_sd0);
-}
-#endif
-
 const struct pinmux_resource pinmuxes[] = {
 	PINMUX_ITEM(spi0_pins_base),
 	PINMUX_ITEM(spi0_pins_scs0),